SLING-7167 Adjust READMEs

add uniform header linking to Sling project

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1810892 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/README b/README.md
similarity index 92%
rename from README
rename to README.md
index 0762455..f581258 100644
--- a/README
+++ b/README.md
@@ -1,4 +1,6 @@
-Apache Sling Resource Editor 
+# Apache Sling Resource Editor
+
+This module is part of the [Apache Sling](https://sling.apache.org) project.
 
 The Apache Sling Resource Editor allows to edit Apache Sling content based on the Sling API. 
 
@@ -15,4 +17,4 @@
 o To have the 'desktop_build' target triggered on changes in the frontend tests, less sources, JavaScript files and JSP sources use `./grunt watch:all` in the frontend directory and also press Ctrl-Z to stop watching.
 o If you don't use 'localhost' as server and '8080' as port you can specify your values by using the environment variables 'SLING_SERVER' 'SLING_PORT'.
 
-Enjoy!
\ No newline at end of file
+Enjoy!