title: Cocos2d scene has weird positioning
body: <p>I'm not quiet sure I understand the positioning in my cocos2d scene.
  I'm putting something in the middle of the scene ( or so I think ) by using</p>
  
  <pre><code>winSize = [[CCDirector sharedDirector] winSize];
  _leftScrollLayer.position = ccp (winSize.width/2,winSize.height/2);
  </code></pre>
  
  <p>However when this loads, the layer is loaded off screen... So then I try the position (0,0), which I assume is the bottom left corner of the screen. This then loads the layer to the top right of the screen...</p>
  
  <p>Not sure if I'm missing anything, I've been playing around with the scene's anchorPoint and position, but it doesn't seem to do anything.</p>