asvdw

// in appDelegate:
let controllerId = "target VC Storyboard ID"
let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let initViewController: UIViewController = storyboard.instantiateViewControllerWithIdentifier(controllerId)
self.window?.rootViewController = initViewController

// *replace* current ViewController by anotherone:
let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let targetViewController: UIViewController = storyboard.instantiateViewControllerWithIdentifier("target VC StoriboardID") as UIViewController
let navigationController: UINavigationController = self.navigationController!;

asvdw

let _storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = _storyboard.instantiateViewControllerWithIdentifier("countryTableViewController") as CountryTableViewController
vc.setupDelegate = self
self.showViewController(vc, sender: nil)

asvdw

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action:
            #selector(ViewController.dismissKeyboard))