title: ARSCNView before iOS 11.0
body: <p>I'm trying to add ARKit to one of my existing apps, and I'm making that transition to the view when you click a button. I made the button only available if you have iOS 11 so you'll only be able to go to that view with iOS 11, but how do I get rid of this error for the Storyboard? </p>
  
  <p>Class Unavailable ARSCNView before iOS 11.0</p>
  
  <p>Thanks!</p>