I load "ViewController1" first. It does a bunch of background housekeeping work and then goes to "ViewController2".
To perform a Segue to "ViewController2", the only way I know is to add a BUTTON (which user never needs to see or use) and then add a segue from that button to the "ViewController2" by holding down control and dragging.
My question is -- Since I dont really need the button in ViewController1 here, how can I just create a Segue and then do it in code using performSegueWithIdentifier("segue_LoginToStart", sender: nil)