title: Get a group of views to rotate around a point
body: <p>You can rotate an UIImageView like this.. </p>
  
  <pre><code> myImage.transform=CGAffineTransformMakeRotation(M_PI/2)
  </code></pre>
  
  <p>But how do you get a group of images to rotate around  point. Say 8 UIButtons arranged in a circle, rotating around a point in the centre.</p>
  
  <p>Any ideas? </p>