title: Displaying banner ads with SpriteKit
body: <p>I'm new to SpriteKit and just published my first game. Now I would like to add banner ads to the game. However, I'm completely lost. </p>
  
  <p>Most tutorials tell you to simply call</p>
  
  <pre><code>self.canDisplayBannerAds = YES;
  </code></pre>
  
  <p>in the viewDidLoad method. I'm doing that, and I also imported iAD.h and linked the required binaries. However, everytime I start the game it crashes and gives me the following error:</p>
  
  <pre><code>-[UIView presentScene:transition:]: unrecognized selector sent to instance 0x15e2dd00
  </code></pre>
  
  <p>Does anybody know a good tutorial or any ideas on how to correctly implement iADs into a Sprite Kit game? Apple Docs wasn't really helpful either.</p>