title: Adding UINavigationController to existing UIViewController
body: <p>How do I add an existing UIViewController (which is presented using presentModalViewController) to a UINavigationController?</p>
  
  <p>When user tap on button, a new copy of my detail view need to be pushed. (In other words, pushViewController displaying pushViewController, modally, in a UINavigationController). </p>
  
  <p>Easiest way to enable this functionality?</p>