title: ios 8 change the size of presented/modal view controller
body: <p>In ios 7 and before, I was updating the bounds of presentedViewController.view.superview to custom the size of presented view controller, but it seems this would not be the case in ios 8 any more. Since there is no superview can be set on the view controller(return nil when you try to call it in debugger). </p>
  
  <p>Any suggestions how to update the presented view controller's size? This would be used for the custom presentation transition. </p>