added version 28

git-svn-id: https://svn.apache.org/repos/asf/maven/pom/trunk@1716985 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/maven/maven-plugins/src/site-docs/apt/index.apt.vm b/maven/maven-plugins/src/site-docs/apt/index.apt.vm
index 51397c0..611feda 100644
--- a/maven/maven-plugins/src/site-docs/apt/index.apt.vm
+++ b/maven/maven-plugins/src/site-docs/apt/index.apt.vm
@@ -50,6 +50,8 @@
 *--------------+------------+
 || <<Version>> || <<Release Date>> ||
 *--------------+------------+
+| {{{http://svn.apache.org/viewvc/maven/plugins/tags/maven-plugins-28/pom.xml?view=markup}28}} ({{{http://svn.apache.org/viewvc/maven/plugins/tags/maven-plugins-28/pom.xml?r1=HEAD&r2=1716984&diff_format=h}diff}}) | 2015-10-13  |
+*--------------+------------+
 | {{{http://svn.apache.org/viewvc/maven/plugins/tags/maven-plugins-27/pom.xml?view=markup}27}} ({{{http://svn.apache.org/viewvc/maven/plugins/tags/maven-plugins-27/pom.xml?r1=HEAD&r2=1632929&diff_format=h}diff}}) | 2014-11-13  |
 *--------------+------------+
 | {{{http://svn.apache.org/viewvc/maven/plugins/tags/maven-plugins-26/pom.xml?view=markup}26}} ({{{http://svn.apache.org/viewvc/maven/plugins/tags/maven-plugins-26/pom.xml?r1=HEAD&r2=1582504&diff_format=h}diff}}) | 2014-10-22  |