title: Rails Devise : session#destroy missing
body: <p>I just set up devise for my Rails application. It was with the "user" model.</p>
  
  <p>When I look at the routes created, I can see :</p>
  
  <pre><code>destroy_user_session DELETE /users/sign_out(.:format)      devise/sessions#destroy
  </code></pre>
  
  <p>Though, no script intended to destroy the session has been created when I installed Devise.</p>
  
  <p>I'm a little bit lost there...do I have to create this script ? If yes, where do I have to put it ? In the views ? But is it really a view ?</p>
  
  <p>And last but not least, what do I have to put in it ?</p>
  
  <p>Thank you a lot.</p>