title: Setting up buttons in SKScene
body: <p>I'm discovering that <code>UIButtons</code> don't work very well with <code>SKScene</code>, So I'm attempting to subclass <code>SKNode</code> to make a button in <code>SpriteKit</code>. </p>
  
  <p>The way I would like it to work is that if I initialize a button in <code>SKScene</code> and enable touch events, then the button will call a method in my <code>SKScene</code> when it is pressed. </p>
  
  <p>I'd appreciate any advice that would lead me to finding the solution to this problem. Thanks.</p>