     // MARK: Constants
     //
     
-    let numberOfPages = 5
-    
     let gradients: [GradientConfig] = [
         GradientConfig(topColor: UIColor(red:0.01, green:0.00, blue:0.18, alpha:1.0), bottomColor: UIColor(red:0.00, green:0.53, blue:0.80, alpha:1.0)),
         GradientConfig(topColor: UIColor(red:0.20, green:0.08, blue:0.00, alpha:1.0), bottomColor: UIColor(red:0.69, green:0.36, blue:0.00, alpha:1.0)),

    
    var previousBarButton: UIBarButtonItem?
    var nextBarButton: UIBarButtonItem?
    
    //
    // MARK: Lifecycle

extension PageViewController: PageboyViewControllerDataSource {
    
    func viewControllers(forPageboyViewController pageboyViewController: PageboyViewController) -> [UIViewController]? {
        return pageControllers
    }
    
    func numberOfViewControllers(in pageboyViewController: PageboyViewController) -> PageboyViewController.PageIndex {
        return pageControllers.count
    }
    
    func viewController(at index: PageboyViewController.PageIndex,
                        in pageboyViewController: PageboyViewController) -> UIViewController? {
        return pageControllers[index]
    }
    
    func defaultPage(for pageboyViewController: PageboyViewController) -> PageboyViewController.Page? {
