title: Literals (Images & Colors) don't work in Xcode
body: <p>When I try using literals in a Playground, it shows me like this (doesn't show my image):  </p>
  
  <p><a href="https://i.stack.imgur.com/Y4EKw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Y4EKw.png" alt="anotherExample"></a>
  in above i add image or UIImage literal but doesn't show their contents.\</p>
  
  <p>and also this with colors (I can't even see colors):  </p>
  
  <p><a href="https://i.stack.imgur.com/sZG4s.png" rel="noreferrer"><img src="https://i.stack.imgur.com/sZG4s.png" alt="another example"></a></p>