3.9 readme update

git-svn-id: https://plugins.svn.wordpress.org/sort-page-list-by-last-name/trunk@894643 b8457f37-d9ea-0310-8a92-e5e31aec5664
3.9 readme update

git-svn-id: https://plugins.svn.wordpress.org/sort-page-list-by-last-name/trunk@894646 b8457f37-d9ea-0310-8a92-e5e31aec5664
3.9 readme update

git-svn-id: https://plugins.svn.wordpress.org/sort-page-list-by-last-name/trunk@894647 b8457f37-d9ea-0310-8a92-e5e31aec5664