replace redirect with contribute.html
diff --git a/index.html b/index.html
index be5fa7e..8e920b7 100644
--- a/index.html
+++ b/index.html
@@ -1,15 +1,128 @@
-<!DOCTYPE HTML>
-<html lang="en-US">
-    <head>
-        <meta charset="UTF-8">
-        <meta http-equiv="refresh" content="1;url=http://groovy-lang.org">
-        <script type="text/javascript">
-            window.location.href = "http://groovy-lang.org"
-        </script>
-        <title>Page Redirection</title>
-    </head>
-    <body>
-        <!-- Note: don't tell people to `click` the link, just tell them that it is a link. -->
-        If you are not redirected automatically, follow the <a href='http://groovy-lang.org'>link to the Groovy website</a>
-    </body>
-</html>
+<!DOCTYPE html>
+<!--[if lt IE 7]>      <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
+<!--[if IE 7]>         <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
+<!--[if IE 8]>         <html class="no-js lt-ie9"> <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]--><head>
+    <meta charset='utf-8'/><meta http-equiv='X-UA-Compatible' content='IE=edge'/><meta name='viewport' content='width=device-width, initial-scale=1'/><title>The Apache Groovy programming language - Contribute</title><link href='http://groovy-lang.org/img/favicon.ico' type='image/x-ico' rel='icon'/><link rel='stylesheet' type='text/css' href='http://groovy-lang.org/css/bootstrap.css'/><link rel='stylesheet' type='text/css' href='http://groovy-lang.org/css/font-awesome.min.css'/><link rel='stylesheet' type='text/css' href='http://groovy-lang.org/css/style.css'/>
+</head><body>
+    <div id='fork-me'>
+        <a href='https://github.com/apache/groovy'>
+            <img style='position: fixed; top: -14px; right: -14px; border: 0; z-index: 100' src='https://camo.githubusercontent.com/365986a132ccd6a44c23a9169022c0b5c890c387/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f7265645f6161303030302e706e67' alt='Fork me on GitHub' data-canonical-src='https://s3.amazonaws.com/github/ribbons/forkme_right_red_aa0000.png'/>
+        </a>
+    </div><div id='st-container' class='st-container st-effect-9'>
+        <nav class='st-menu st-effect-9' id='menu-12'>
+            <h2 class='icon icon-lab'>Socialize</h2><ul>
+                <li>
+                    <a href='http://groovy-lang.org/mailing-lists.html' class='icon'><span class='fa fa-envelope'></span> Discuss on the mailing-list</a>
+                </li><li>
+                    <a href='http://groovy-lang.org/groovy-weekly.html' class='icon'><span class='fa fa-envelope-o'></span> Groovy newsletter</a>
+                </li><li>
+                    <a href='https://twitter.com/ApacheGroovy' class='icon'><span class='fa fa-twitter'></span> Groovy on Twitter</a>
+                </li><li>
+                    <a href='http://groovy-lang.org/events.html' class='icon'><span class='fa fa-calendar'></span> Events and conferences</a>
+                </li><li>
+                    <a href='https://github.com/apache/groovy' class='icon'><span class='fa fa-github'></span> Source code on GitHub</a>
+                </li><li>
+                    <a href='http://groovy-lang.org/reporting-issues.html' class='icon'><span class='fa fa-bug'></span> Report issues in Jira</a>
+                </li><li>
+                    <a href='https://google.com/+groovy' class='icon'><span class='fa fa-google-plus'></span> Google+ Groovy Page</a>
+                </li><li>
+                    <a href='http://bit.ly/g-community' class='icon'><span class='fa fa-google-plus'></span> Google+ Groovy Community</a>
+                </li><li>
+                    <a href='http://stackoverflow.com/questions/tagged/groovy' class='icon'><span class='fa fa-stack-overflow'></span> Stack Overflow questions</a>
+                </li><li>
+                    <a href='http://groovycommunity.com/' class='icon'><span class='fa fa-slack'></span> Slack Community</a>
+                </li>
+            </ul>
+        </nav><div class='st-pusher'>
+            <div class='st-content'>
+                <div class='st-content-inner'>
+                    <!--[if lt IE 7]>
+                    <p class="browsehappy">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
+                <![endif]--><div><div class='navbar navbar-default navbar-static-top' role='navigation'>
+                            <div class='container'>
+                                <div class='navbar-header'>
+                                    <button type='button' class='navbar-toggle' data-toggle='collapse' data-target='.navbar-collapse'>
+                                        <span class='sr-only'></span><span class='icon-bar'></span><span class='icon-bar'></span><span class='icon-bar'></span>
+                                    </button><a class='navbar-brand' href='index.html'>
+                                        <i class='fa fa-star'></i> Apache Groovy
+                                    </a>
+                                </div><div class='navbar-collapse collapse'>
+                                    <ul class='nav navbar-nav navbar-right'>
+                                        <li class=''><a href='http://groovy-lang.org/learn.html'>Learn</a></li><li class=''><a href='http://groovy-lang.org/documentation.html'>Documentation</a></li><li class=''><a href='http://groovy-lang.org/download.html'>Download</a></li><li class=''><a href='http://groovy-lang.org/support.html'>Support</a></li><li class=''><a href='http://groovy.apache.org'>Contribute</a></li><li class=''><a href='http://groovy-lang.org/ecosystem.html'>Ecosystem</a></li><li>
+                                            <a data-effect='st-effect-9' class='st-trigger' href='#'>Socialize</a>
+                                        </li><li class=''>
+                                            <a href='http://groovy-lang.org/search.html'>
+                                                <i class='fa fa-search'></i>
+                                            </a>
+                                        </li>
+                                    </ul>
+                                </div>
+                            </div>
+                        </div><div id='content' class='page-1'><div class='row'><div class='row-fluid'><div class='col-lg-8 col-lg-pull-0'><div id='contribute-btn'>
+                                            <button type='button' class='btn btn-default' onclick='window.location.href="https://github.com/groovy/groovy-website/tree/master/site/src/site/pages/contribute.groovy"'>
+                                                <i class='fa fa-pencil-square-o'></i> Improve this doc
+                                            </button>
+                                        </div><h1><i class='fa fa-pencil-square-o'></i> Getting Involved</h1><article><p>
+                                    Would you like to help us make the Groovy programming language even better?
+                                    There are many ways in which you can get involved, make a difference and help
+                                    the Groovy development team to make Groovy even, well, groovier?
+                                    We really appreciate and welcome contributions and you can help us by:
+                                </p><ul><li>helping other users or discussing future language directions on the <a href='http://groovy-lang.org/mailing-lists.html'>mailing-lists</a></li><li>contribute to discussions on <a href='https://groovycommunity.com/'>Slack</a> - this channel is not endorsed by the Apache Software Foundation, it&apos;s run by Groovy enthusiasts in the community for casual conversations and Q&amp;A,</li><li>reporting or fixing <a href='#reporting-issues'>issues</a> you encounter in our <a href='https://issues.apache.org/jira/browse/GROOVY'>bug tracker</a></li><li><a href='#documenting'>documenting</a> various aspects of the language or its APIs</li><li>improving this <a href='https://github.com/groovy/groovy-website'>website</a></li><li>covering the code base with more tests to avoid future regressions, </li><li>and of course, by <a href='#code'>contributing bug fixes or new features</a></li></ul><hr class='divider'/><h2>Discussing on the mailing-lists and forums</h2><p>
+                                        If you encounter a problem, want to discuss a new feature,
+                                        share interesting findings, and more, then the <a href='http://groovy-lang.org/mailing-lists.html'>mailing-lists</a>
+                                        are the place to go to start a conversation with the Groovy developers
+                                        and other Groovy users. Discussions on the mailing list are archived.
+                                        It&apos;s the place to go to for all formal discussions or if you want to
+                                        search the archives. </p><p>Alternatively, for more casual conversations and Q&amp;A, consider using the <a href='https://groovycommunity.com/'>Slack</a> channel. This channel is not endorsed by the Apache Software Foundation; it&apos;s run by Groovy enthusiasts in the community.</p><hr class='divider'/><a name='reporting-issues'></a><h2>Reporting issues</h2><p>
+                                        If you are wanting to search existing issues, raise a new one or are keen
+                                        to fix some existing issues, then you should become familiar with Groovy&apos;s <a href='http://groovy-lang.org/reporting-issues.html'>Bug tracker</a>.</p><p><button type='button' class='btn btn-default' onclick='window.location.href="https://issues.apache.org/jira/browse/GROOVY"'>Report an issue</button></p><hr class='divider'/><a name='documenting'></a><h2>Improving the documentation</h2><p>The documentation of the Groovy programming language comes in various forms:</p><ul><li>the <a href='http://groovy-lang.org/single-page-documentation.html'>reference documentation</a> covering the language specification, the user guides, getting started, and more.</li><li>the <a href='http://groovy-lang.org/api.html'>GroovyDoc APIs</a> documenting the classes of the Groovy code base</li><li>the <a href='http://groovy-lang.org/gdk.html'>Groovy GDK</a> documentation, explaining how Groovy enriches the JDK APIs</li><li>this <a href='https://github.com/groovy/groovy-website'>website</a></li></ul><p>To contribute to the Groovy reference documentation, this <a href='http://blog.cacoethes.co.uk/groovyandgrails/contributing-to-the-groovy-documentation'>blog post</a> gives all the details on how you can work on that documentation.</p><p>All the above is stored in our code <a href='https://github.com/groovy'>repositories on Github</a>, so having an account on Github would be ideal.</p><p>
+                                    Contributing to this website is fairly easy, if you have a Github account already,
+                                    as you can click on the <em>Improve this doc</em> buttons that you can see on all the pages of this website.
+                                    So don't hesitate to help us improve it, fix typos, broken language, clarify complicated sections,
+                                    add new material, etc.
+                                </p><p>Please check the following section for more information on how to contribute to our codebase.</p><hr class='divider'/><a name='code'></a><h2>Contributing code</h2><p>
+                                        If you know the area you want to contribute to, this is great, but if you are looking for
+                                        some first contributions, the Groovy development team tries to maintain a <a href='https://issues.apache.org/jira/secure/IssueNavigator%21executeAdvanced.jspa?jqlQuery=project%3DGROOVY+and+labels+%3D+contrib+AND+resolution%3DUnresolved&runQuery=true&clear=true'>list of tickets</a>
+                                        of possible easy contributions that could get you started on your journey
+                                        to become a Groovy committer. Just raise your hand on the Groovy developer <a href='http://groovy-lang.org/mailing-lists.html'>mailing-list</a> to tell us about your desire to work on that ticket.</p><p>
+                                    For more complicated tasks, the best approach is also to bring that to the attention of the Groovy developers,
+                                    so they can give you some guidance on how best to tackle a particular problem, discuss implementation ideas
+                                    and the semantics or scope of the proposed change.
+                                </p><h3>Cloning the code base</h3><p>To work on the Groovy code base, you should be proficient enough in <a href='http://git-scm.com/'>git</a> and you should have an account on <a href='https://github.com/'>Github</a> to be able to create <a href='https://help.github.com/articles/creating-a-pull-request'>pull requests</a> with your changes.</p><p>Please fork <a href='https://github.com/apache/groovy'>https://github.com/apache/groovy</a> and create a local clone of your fork as explained in <a href='https://help.github.com/articles/fork-a-repo/'>fork a repo</a>.</p><p>Make sure you configure Git appropriately with the same email that you registered with on Github:</p><pre><code>git config --global user.name "YOUR NAME"
+git config --global user.email "YOUR EMAIL"</code></pre><p>You can verify these are configured appropriately by running:</p><pre><code>git config --list</code></pre><h3>Working on the code base</h3><p>If you are working with the IntelliJ IDEA development environment, this <a href='http://melix.github.io/blog/2014/06/contribute-groovy-ide.html'>screencast</a> gives lots of details on how to setup your IDE.</p><p>Then, to work on the Groovy code base, to build and test Groovy, you can follow the <a href='https://github.com/apache/groovy/blob/master/README.adoc'>instructions</a> from the readme file in the Groovy repository.</p><p>The most important command you will have to run before sending your changes is the test command:</p><pre><code>./gradlew test</code></pre><p>For a successful contribution, all tests should be green!</p><h3>Creating a pull request</h3><p>Once you are satisfied with your changes:</p><ul><li>commit your changes in your local branch</li><li>push your changes to your remote branch on Github</li><li>send us a <a href='https://help.github.com/articles/creating-a-pull-request'>pull requests</a></li></ul></article><hr class='divider'/><h2>Build status</h2><p>The Groovy sources are tested thanks to our <a href='http://groovy-lang.org/buildstatus.html'>continuous integration server</a>.</p></div></div></div></div><footer id='footer'>
+                            <div class='row'>
+                                <div class='colset-3-footer'>
+                                    <div class='col-1'>
+                                        <h1>Groovy</h1><ul>
+                                            <li><a href='http://groovy-lang.org/learn.html'>Learn</a></li><li><a href='http://groovy-lang.org/documentation.html'>Documentation</a></li><li><a href='http://groovy-lang.org/download.html'>Download</a></li><li><a href='http://groovy-lang.org/support.html'>Support</a></li><li><a href='http://groovy.apache.org'>Contribute</a></li><li><a href='http://groovy-lang.org/ecosystem.html'>Ecosystem</a></li>
+                                        </ul>
+                                    </div><div class='col-2'>
+                                        <h1>About</h1><ul>
+                                            <li><a href='https://github.com/apache/groovy'>Source code</a></li><li><a href='http://groovy-lang.org/security.html'>Security</a></li><li><a href='http://groovy-lang.org/learn.html#books'>Books</a></li><li><a href='http://groovy-lang.org/thanks.html'>Thanks</a></li><li><a href='http://www.apache.org/foundation/sponsorship.html'>Sponsorship</a></li><li><a href='http://groovy-lang.org/faq.html'>FAQ</a></li><li><a href='http://groovy-lang.org/search.html'>Search</a></li>
+                                        </ul>
+                                    </div><div class='col-3'>
+                                        <h1>Socialize</h1><ul>
+                                            <li><a href='http://groovy-lang.org/mailing-lists.html'>Discuss on the mailing-list</a></li><li><a href='http://groovy-lang.org/groovy-weekly.html'>Groovy newsletter</a></li><li><a href='https://twitter.com/ApacheGroovy'>Groovy on Twitter</a></li><li><a href='http://groovy-lang.org/events.html'>Events and conferences</a></li><li><a href='https://github.com/apache/groovy'>Source code on GitHub</a></li><li><a href='http://groovy-lang.org/reporting-issues.html'>Report issues in Jira</a></li><li><a href='https://google.com/+groovy'>Google+ Groovy Page</a></li><li><a href='http://bit.ly/g-community'>Google+ Groovy Community</a></li><li><a href='http://stackoverflow.com/questions/tagged/groovy'>Stack Overflow questions</a></li><li><a href='http://groovycommunity.com/'>Slack Community</a></li>
+                                        </ul>
+                                    </div><div class='col-right'>
+                                        <p>
+                                            The Groovy programming language is supported by the <a href='http://www.apache.org'>Apache Software Foundation</a> and the Groovy community
+                                        </p><img src='http://groovy-lang.org/img/asf_logo.png' title='The Apache Software Foundation' alt='The Apache Software Foundation' class='img-responsive'/>
+                                    </div>
+                                </div><div class='clearfix'>&copy; 2003-2017 the Apache Groovy project &mdash; Groovy is Open Source, <a href='http://www.apache.org/licenses/LICENSE-2.0.html'>Apache 2 License</a></div>
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