Add tests for the Remember Me flag

git-svn-id: https://plugins.svn.wordpress.org/google-authenticator-per-user-prompt/trunk@912273 b8457f37-d9ea-0310-8a92-e5e31aec5664
Whitespace fix

git-svn-id: https://plugins.svn.wordpress.org/google-authenticator-per-user-prompt/trunk@912274 b8457f37-d9ea-0310-8a92-e5e31aec5664