Create Storyboard "dismiss" Segue

DismissSegue.swift

/* Original from: http://jeffreysambells.com/2014/02/19/dismissing-a-modal-view-using-a-storyboard-segue
Now updated to swift
*/

import UIKit

class DismissSegue : UIStoryboardSegue {
    override func perform() {
        let sourceViewController = self.sourceViewController as! UIViewController
        sourceViewController.presentingViewController!.dismissViewControllerAnimated(true, completion: nil)
    }
}