@IBAction func segueToMe(segue: UIStoryboardSegue) {
        // segue back
    }

    override func segueForUnwindingToViewController(toViewController: UIViewController, fromViewController: UIViewController, identifier: String?) -> UIStoryboardSegue {

        if let id = identifier {
            if id == "returnToMainViewController" {
                let unwindSegue = UIStoryboardUnwindSegueFromRight(identifier: id, source: fromViewController, destination: toViewController)
                return unwindSegue
            }        
        }
        
        return super.segueForUnwindingToViewController(toViewController, fromViewController: fromViewController, identifier: identifier)
    }