tagging version 2.3.1

git-svn-id: https://plugins.svn.wordpress.org/written/trunk@888874 b8457f37-d9ea-0310-8a92-e5e31aec5664
tagging version 2.3.1

git-svn-id: https://plugins.svn.wordpress.org/written/trunk@888875 b8457f37-d9ea-0310-8a92-e5e31aec5664