How to instantiate a storyboard with initial viewController.

initStoryboard.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
    
    // override point for customization after application launch
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    
    UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Storyboard" bundle:nil];
    self.window.rootViewController = [sb instantiateInitialViewController];
    
    [self.window makeKeyAndVisible];
    
    return YES;
}