Readme ajust

git-svn-id: https://plugins.svn.wordpress.org/edit-post-link/trunk@763427 b8457f37-d9ea-0310-8a92-e5e31aec5664
Readme adjustment

git-svn-id: https://plugins.svn.wordpress.org/edit-post-link/trunk@763429 b8457f37-d9ea-0310-8a92-e5e31aec5664