Calling segue programmatically doesn't work

I am trying to make a splash screen. I have a view that has a background image drawn and then another view that I want to go to in a few seconds. I am trying to use the following code:

self.performSegueWithIdentifier("showApp", sender: self)

      

        
        
        
      

    

I created a transition between the two views by pressing Ctrl + while dragging the line from one to the other. I have set the segue id to "showApp".

When I run the code nothing happens and there are no errors. Any ideas?

Here's the controller for the splash screen:

class SplashViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        sleep(2)

        // THIS DOES NOTHING:
        self.performSegueWithIdentifier("showApp", sender: self)

        // THIS AS SUGGESTED ALSO DOES NOTHING:
        var otherViewController:UIViewController = self.storyboard.instantiateViewControllerWithIdentifier("test") as UIViewController
        self.presentViewController(otherViewController, animated: true, completion: nil)
    }
}