Trunk readme update

git-svn-id: https://plugins.svn.wordpress.org/is-user-premium/trunk@1015262 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating trunk

git-svn-id: https://plugins.svn.wordpress.org/is-user-premium/trunk@1015267 b8457f37-d9ea-0310-8a92-e5e31aec5664