title: Sencha Touch: Clicking a button rapidly will push a view twice
body: <p>Say I have a button that triggers a push of a new view.
  I noticed that if I click it more than once, fast enough, it will push the same view twice.</p>
  
  <p>You can mimic this behavior using their official docs on this page, where they have a live sample:
  <a href="http://docs.sencha.com/touch/2-0/#!/guide/navigation_view" rel="nofollow">http://docs.sencha.com/touch/2-0/#!/guide/navigation_view</a></p>
  
  <p>the clear question is, simply how to prevent it?</p>