Add docs

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1308618 13f79535-47bb-0310-9956-ffa450edef68

Author: sebbASF

src/changes/changes.xml

@@ -16,6 +16,26 @@
    limitations under the License.
 -->
 <!-- $Id$ -->
+
+<!--
+This file is also used by the maven-changes-plugin to generate the release notes.
+Useful ways of finding items to add to this file are:
+
+1.  Add items when you fix a bug or add a feature (this makes the
+release process easy :-).
+
+2.  Do a JIRA search for tickets closed since the previous release.
+
+3.  Use the report generated by the maven-changelog-plugin to see all
+SVN commits. TBA how to use this with SVN.
+
+To generate the release notes from this file:
+
+mvn changes:announcement-generate -Prelease-notes [-Dchanges.version=m.n]
+
+The <action> type attribute can be add,update,fix,remove.
+-->
+
 <document>
   <properties>
     <title>Changes</title>