title: Cant update button title after request with completion
body: <p>Im making an http GET request in separate class and call it inside subclass of UITableViewCell 
  What i want is to show the count of array objects on button title after request, but its shows 0</p>
  
  <p>here is my code: </p>
  
  <pre><code>class ReportAnIssue: UITableViewCell {
   var issuesArray = [Issue]()
   var openedIssuesArray = [Issue]()
   var closedIssuesArray = [Issue]()
  
  @IBOutlet weak var openedIssuesButton: UIButton!
  @IBOutlet weak var closedIssuesButton: UIButton!
  
  
  required init?(coder aDecoder: NSCoder) {
      super.init(coder: aDecoder)
      let maker = UserProfileMaker()
      maker.request() {  issuesArray, openedIssuesArray, closedIssuesArray,  success in
          self.issuesArray = issuesArray
          self.openedIssuesArray = openedIssuesArray
          self.closedIssuesArray = closedIssuesArray
          // here array.count == 1
          self.openedIssuesButton.setTitle("Opened Issues: \(self.openedIssuesArray.count)", forState: .Normal)
          //here I'am getting 0 in title, but in fact it should be one
      }
  
      }
  
  
  }
  </code></pre>