title: Including a UIKit mini-game into a SpriteKit project
body: <p>So I've made a quiz app in UIKit, with a question being displayed, four answers to pick from, etc. But since this project includes multiple mini-games, the rest of the project is written in SpriteKit. Is it worth it to rewrite the quiz app in SpriteKit, or is there some way I could include this UIKit mini-game into a SpriteKit project.
  I've already tried to work with two classes like this:</p>
  
  <pre><code>public class GameScene: SKScene { 
  
      public var orientation: UIInterfaceOrientation!
      let QuizScene = QuizScene()
  
      override public func didMove(to view: SKView) {
  
          fireQuizScene.setUpBushfireQuiz()
  
      }
  
  } 
  </code></pre>
  
  <p>But it doesn't seem to work. Any help would be greatly appreciated. Thanks!</p>