auth_generator 2.0.1 undefined method `login_required' for ... ArticlesController

I am a relative RubNub and attempting to implement auth_generator v.2.0.1.

I am getting an "undefined method `login_required' for
#<ArticlesController:0xb732c0b4>" error when I attempt...

http://localhost:3000/articles/new

Help would be appreciated.

My app/controllers/application.rb reads...