updates WP version tested to 4.0

git-svn-id: https://plugins.svn.wordpress.org/wpclef/trunk@979795 b8457f37-d9ea-0310-8a92-e5e31aec5664
changes plugin author to Clef

git-svn-id: https://plugins.svn.wordpress.org/wpclef/trunk@979890 b8457f37-d9ea-0310-8a92-e5e31aec5664