title: How to clear cookies in Sencha Touch 2.0
body: <p>Upon logging in to server-side assets, the server sets cookies in my sencha touch app. In order to 'logout' I need to clear those cookies client side but I can't figure out how to do that. In JQuery I would do something like this:</p>
  
  <pre><code>$.cookie('cookiename', null)
  </code></pre>
  
  <p>When I try something that I <em>think</em> is equivalent in my Sencha app it does not work (I can still see the cookies in the next Ajax request I make). </p>
  
  <p>Help?</p>