Update to version 2.1.

git-svn-id: https://plugins.svn.wordpress.org/cuusoo-list/trunk@951917 b8457f37-d9ea-0310-8a92-e5e31aec5664
Forgot to update the version number :(

git-svn-id: https://plugins.svn.wordpress.org/cuusoo-list/trunk@951919 b8457f37-d9ea-0310-8a92-e5e31aec5664