Update Readme

git-svn-id: https://plugins.svn.wordpress.org/recent-posts-video-icon/trunk@884326 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update Readme

git-svn-id: https://plugins.svn.wordpress.org/recent-posts-video-icon/trunk@884327 b8457f37-d9ea-0310-8a92-e5e31aec5664