Methods to initiate view controller somehow *before* viewDidLoad - not usually necessary. From lecture 5 (47:00) of Standard CS193P Winter/Spring 2013

ViewControllerInit.c

- (void) setup
{
    // init that can't wait for viewDidLoad
}

- (void) awakeFromNib
{
    [self setup];
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    [self setup];
    return self;
}