title: Adjust UICollectionView's Width
body: <p>I'm using ViewDeck to make a slide menu, and would like to shorten the width of my CollectionView, which functions as a menu. I can't seem to find any delegate methods to do so though.</p>
  
  <p>I'm using Storyboards, and this is my issue:</p>
  
  <p><img src="https://i.stack.imgur.com/oxQDX.png" alt="enter image description here"></p>
  
  <p>Perhaps some sort of setup using? : </p>
  
  <blockquote>
    <ul>
    <li>(UIEdgeInsets)collectionView: (UICollectionView <em>)collectionView layout:(UICollectionViewLayout</em>)collectionViewLayout
    insetForSectionAtIndex:(NSInteger)section</li>
    </ul>
  </blockquote>