title: UICollectionView reverse Layout
body: <p>I've got a problem, i want make CollectionView like a 'chat'. Than i should reverse Layout of <code>UICollectionView</code>. Can i configure layout that  contentOffset = (0; 0) will be on bottom <code>UICollectionView</code> (and <strong>important</strong> i can't <code>transform</code> CollectionView)?
  Like </p>
  
  <pre><code>-&gt; constenOffset = (0; 1000) (for example)
  | ... |
  |  2  |
  |  1  |
  |  0  |
  -&gt; constentOffset = (0; 0)
  </code></pre>
  
  <p>Also I tried to rotate <code>UITableView</code> but in this case <code>reloadSection</code> animation does not satisfy me.</p>