title: How to put text over node in scenekit?
body: <p>Really simple question which for some reason I cannot find anywhere. How can I write 2D text on a 3D face of a <code>SCNNode</code>?
  For example, on something like this:</p>
  
  <pre><code>let geo = SCNBox(width: 20, height: 20, length: 20, chamferRadius: 0.0);
  //geo.writeFace(postion, text)
  let box = SCNNode(geometry: geo);
  </code></pre>
  
  <p>Of course the comment is made up. Anything like it?</p>