changes in readme 

git-svn-id: https://plugins.svn.wordpress.org/font-awesome-wp/trunk@1000546 b8457f37-d9ea-0310-8a92-e5e31aec5664
changes

git-svn-id: https://plugins.svn.wordpress.org/font-awesome-wp/trunk@1000549 b8457f37-d9ea-0310-8a92-e5e31aec5664