updates readme with new video

git-svn-id: http://plugins.svn.wordpress.org/wpclef/trunk@792658 b8457f37-d9ea-0310-8a92-e5e31aec5664
updates trunk to 1.8.1

git-svn-id: http://plugins.svn.wordpress.org/wpclef/trunk@807887 b8457f37-d9ea-0310-8a92-e5e31aec5664
updates to 1.8.1.1