Slight tweak to try to fix login attempts problem.

git-svn-id: https://plugins.svn.wordpress.org/simple-ldap-login/trunk@764209 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating readme.

git-svn-id: https://plugins.svn.wordpress.org/simple-ldap-login/trunk@764210 b8457f37-d9ea-0310-8a92-e5e31aec5664