title: How to add a corner radius to a uiviewcontroller
body: <p>I noticed that in snapchat they rounded their corners of a uiviewcontroller. I was wondering how could I replicate the same thing accross all view controllers. Would I declare it in the app delegate or in each individual view controller. Could someone please show me how to do it. I have an example image below. Look in the top corners of the view controller and you'll see that there rounded. I'm trying to replicate that.</p>
  <p><a href="https://i.stack.imgur.com/qBz2J.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qBz2Jm.png" alt="example image" /></a></p>