Ch. 6.8 Using the UIPageViewController

Learn to implement the UIPageViewController to show different locations. We'l work with setViewController, the before and after UIPageViewController methods, and we'll navigate programmatically as well as with left and right swipes. Part of Ch. 7, The "WeatherGift" app in Prof. John Gallaugher's "Learn to Program Using Swift for iOS Development" v. 4. For more info see: https://gallaugher.com/swift