Updated readme

git-svn-id: https://plugins.svn.wordpress.org/gmail-like-gravatar-fallback/trunk@1027063 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated readme

git-svn-id: https://plugins.svn.wordpress.org/gmail-like-gravatar-fallback/trunk@1027065 b8457f37-d9ea-0310-8a92-e5e31aec5664