title: Devise returning NoMethodError (undefined method `new_user_session_path'
body: <p>I just upgraded to Devise 2.0 from Devise 1.5.1.</p>
  
  <pre><code>Using omniauth (1.0.3) 
  Using omniauth-oauth (1.0.1) 
  Using omniauth-twitter (0.0.8) 
  </code></pre>
  
  <p>I'm using this for twitter authentication. I keep getting:</p>
  
  <pre><code>NoMethodError (undefined method `new_user_session_path' for #&lt;ActionDispatch::Routing::RoutesProxy:0x00000009b57c10&gt;
  </code></pre>
  
  <p>My routes look like:</p>
  
  <pre><code>  devise_for :users, :controllers =&gt; { :sessions =&gt; 'sessions', :omniauth_callbacks =&gt; 'authentications' }, :skip =&gt; [:sessions] do
      get 'sign-out' =&gt; 'sessions#destroy', :as =&gt; :destroy_user_session
    end
  </code></pre>
  
  <p>This error shows up in production. Everything works on development. I am also running on Heroku, if that makes a difference.</p>