Alert Controllers, Pickers, and Timers

Countdown Starter Project

Fork and clone this repository to begin the guided project.

It includes logic for a Countdown class that you will use to create a Countdown timer app.

1. You will learn how to make an alert popup using the UIAlertController
2. You will learn how to start a Timer
3. You will be able to see how to separate business logic from the user interface.
4. You will learn how to customize a UIPickerView for user input