title: Collection View Cells not appearing in Collection View?
body: <p>I created a Collection View using purely the storyboard interface builder. This is what the storyboard looks like:</p>
  
  <p><a href="https://i.stack.imgur.com/7nfCG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7nfCG.png" alt="Storyboard"></a></p>
  
  <p>My collection view's properties are default as well. I haven't written anything into my <code>ViewController.swift</code> yet.</p>
  
  <p><a href="https://i.stack.imgur.com/1jK0b.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1jK0b.png" alt="Collection View"></a></p>
  
  <p>For some reason, when I run on my phone / emulator, none of the buttons are showing.</p>