title: Dismiss all UIViewController
body: <p>I have app with 3 <code>UIViewContoller</code></p>
  
  <pre><code>UIViewContollerA
  UIViewContollerB
  UIViewContollerC
  </code></pre>
  
  <p><code>UIViewContollerA</code> open <code>UIViewContollerB</code> with <code>presentModalViewController</code>
  <code>UIViewContollerB</code> open <code>UIViewContollerC</code> with <code>presentModalViewController</code></p>
  
  <p>And i want to have the possible that in one click on button in <code>UIViewContollerC</code> to dismiss all The UIViewController.</p>
  
  <p>I try to call <code>dismissModalViewControllerAnimated</code> twice but it won't work, there is any other option to do it?
  it's possible?</p>