title: spacing between UITableViewCells
body: <p>I am creating a ios app in swift and want to add spacing between cells like Facebook (pic bellow).</p>
  
  <p>I am using a custom nib for the posts. I know to use UITableViewController. I figure I would use a separator style but it does not achieve the effect. I goggled around for hours and can't find a single tutorial in swift that makes sense! could some one explain how they did it in there app using swift? thanks!</p>
  
  <p><img src="https://i.stack.imgur.com/8CWnG.png" alt="enter image description here"></p>