Move Google Authenticator requirement to top of list.

Because some people don't realize you need it, and it's the least confusion requirement for non-technical users.


git-svn-id: https://plugins.svn.wordpress.org/google-authenticator-per-user-prompt/trunk@911682 b8457f37-d9ea-0310-8a92-e5e31aec5664
Improve inline documentation formatting

git-svn-id: https://plugins.svn.wordpress.org/google-authenticator-per-user-prompt/trunk@911683 b8457f37-d9ea-0310-8a92-e5e31aec5664