Readme updated

git-svn-id: https://plugins.svn.wordpress.org/category-featured-images/trunk@1041744 b8457f37-d9ea-0310-8a92-e5e31aec5664
Readme updated

git-svn-id: https://plugins.svn.wordpress.org/category-featured-images/trunk@1041745 b8457f37-d9ea-0310-8a92-e5e31aec5664