title: Access parent view from a chid UIView
body: <p>I have a UIViewController with an xib and using Interface Builder I've added a child UIView.
  Within the child UIView, when I click on an object within that view, I want to be able to alter the title of the whole window.</p>
  
  <p>Now I'd normally do that setting </p>
  
  <pre><code>self.title = @"hi";
  </code></pre>
  
  <p>on the parent UIViewController. But is there any way I can access the parent title from within the child?</p>
  
  <p>I've tried</p>
  
  <pre><code>self.superview.title = @"i";
  self.parentViewController.title = @"hi";
  </code></pre>
  
  <p>but neither work.
  Any help much appreciated</p>
  
  <p>thanks</p>