title: Scene Editor: can't specify texture name without @2x
body: <p>I am setting up a test Sprite Kit Scene file (*.sks) that I plan to use with both the iPhone6 and iPhone6 Plus. I have two versions of my Spaceman art work called:</p>
  
  <ul>
  <li>Spaceman@2x.png (50 x 50 pixels, 25 x 25 points)</li>
  <li>Spaceman@3x.png (75 x 75 pixels, 25 x 25 points)</li>
  </ul>
  
  <p>I was hoping that the Scene Editor would let me specify just "Spaceman" and then select the correct images depending on which device I was running (a bit like you do in code where you don't specify the @2x or the .png). But it seems that I have to select the image for the texture by its full name.</p>
  
  <p>I have noticed that if I select "Spaceman@3x.png" it does scale down and display correctly at 25 x 25 points on the iPhone6 but by this measure I don't need to bother with @2x images at all.</p>
  
  <p>Can anyone point me in the right direction, do I use @2x on iPhone6 and @3x on iPhone6 Plus or do I just go with @3x images only and us them for everything?</p>
  
  <p><img src="https://i.stack.imgur.com/Ij2jQ.png" alt="enter image description here"></p>