Update to the development version

git-svn-id: https://plugins.svn.wordpress.org/admin-bar-button/trunk@907396 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update to the readme file in thedevelopment version

git-svn-id: https://plugins.svn.wordpress.org/admin-bar-button/trunk@907398 b8457f37-d9ea-0310-8a92-e5e31aec5664