The navigation system
Before continuing to implement wire-frames, let's put the navigation system in place. For now we are going to create a navigation bar with options for Chapters 3 to 10. However, you might have noticed that Chapter 5, The Notifier Service – Creating Cron Jobs in Angular, needs a different type of UI and putting it inside a menu item doesn't make sense. That makes perfect sense, but for now we tend to keep things as simple as possible. The objective for assigning each chapter to a menu item is for easier demonstration only. Once we have all components, services, and their functionality in place, we can review the whole UI and modify it to a better one.
