title: Devise Admin authenticate_admin! not defined?
body: <p>I am trying to use 'authenticate_admin!' from devise. I am currently using <a href="https://github.com/plataformatec/devise/wiki/How-To:-Add-an-Admin-Role" rel="nofollow">https://github.com/plataformatec/devise/wiki/How-To:-Add-an-Admin-Role</a> OPTION 2. I am getting the error that authenticate_admin is not defined. Is there a way for me to utilize devise's admin macros and other functionalities while still using option 2? </p>