Challenges

This project includes solutions to the challenges.

1. Go back to project 1 and use a conditional modifier to change the total amount text view to red if the user selects a 0% tip.
2. Go back to project 2 and replace the Image view used for flags with a new FlagImage() view that renders one flag image using the specific set of modifiers we had.
3. Create a custom ViewModifier (and accompanying View extension) that makes a view have a large, blue font suitable for prominent titles in a view.