title: Scale with CGAffineTransform and set the anchor
body: <p>If I understand correctly scaling a <code>UIView</code> with <code>CGAffineTransform</code> anchors the transformation to its center.</p>
  
  <p>In particular:</p>
  
  <pre><code>self.frame = CGRectMake(0,0,100,100);
  self.transform = CGAffineTransformMakeScale(2, 2);
  NSLog(@"%f;%f;%f;%f", self.frame.origin.x, self.frame.origin.y, self.frame.size.width, self.frame.size.height); 
  </code></pre>
  
  <p>Prints:</p>
  
  <pre><code>-50;-50;200;200
  </code></pre>
  
  <p>How do you create a CGAffineTransform scale that uses a specific anchor point (say 0;0)?</p>