title: How to setup ViewController in Playgrounds?
body: <p>In swift playgrounds how do you setup a viewcontroller and use it? I've done it with a UIView before but the UI gets cut when in a difference orientation so I want to try use a viewcontroller. 
  I've got <code>let view = UIViewController()</code> but after that how do I set it up to add a background and stuff on it?</p>