tableView prototype cell 부분을 보여주지 않으려면

- Remove empty space before cells in UITableViewRemove empty space before cells in UITableView 

http://stackoverflow.com/questions/18906919/remove-empty-space-before-cells-in-uitableview

override func viewDidLoad() {     super.viewDidLoad()     self.automaticallyAdjustsScrollViewInsets = false     // Do any additional setup after loading the view, typically from a nib.  }