title: uninitialized constant error in rails 3 on newly created controller
body: <p>I added a Session controller to my application for user sign-in / sign-out, using</p>
  
  <blockquote>
    <p>rails g controller Session new create destroy</p>
  </blockquote>
  
  <p>then add the following lines to my route file:</p>
  
  <blockquote>
    <p>resources :sessions, :only => [:new, :create, :destroy]<br>
         match '/signup', :to => 'users#new'<br>
         match '/signin', :to => 'sessions#new'<br>
         match '/signout', :to => 'sessions#destroy'</p>
  </blockquote>
  
  <p>when I do <code>rake routes</code> in the console, the routes do show up, but when I launch the app in the browser, I got this error:</p>
  
  <blockquote>
    <p>uninitialized constant SessionsController</p>
  </blockquote>
  
  <p>Thanks in advance!</p>