SF Move Login: some more help in the readme file.

git-svn-id: https://plugins.svn.wordpress.org/sf-move-login/trunk@960584 b8457f37-d9ea-0310-8a92-e5e31aec5664
SF Move Login: some more help in the readme file.

git-svn-id: https://plugins.svn.wordpress.org/sf-move-login/trunk@960591 b8457f37-d9ea-0310-8a92-e5e31aec5664