updated requires at least version

git-svn-id: https://plugins.svn.wordpress.org/gmail-comment-approval/trunk@876144 b8457f37-d9ea-0310-8a92-e5e31aec5664
installation updated

git-svn-id: https://plugins.svn.wordpress.org/gmail-comment-approval/trunk@876145 b8457f37-d9ea-0310-8a92-e5e31aec5664