title: UICollectionView Horizontal Scrolling shows previous items even when paging is enabled
body: <p>I am implementing a uicollection view with scroll direction set to horizontal. I also enabled the paging option in storyboard. In my view, I can display 4 items at a time. If I have 5 items, the first page has 4 items but the second page has 3 items. Previous items are also displayed on the second page.</p>
  
  <p>I just like to ask how can I prevent this? I want 4 items on first page and only 1 item on the second page. I am thinking of adding items and set them to hidden to do this. Is this the proper way of solving this?</p>
  
  <p>Thank you very much!</p>