hw2 to do app

[andyrhee]

Ready for your review.

Thanks! Andy

/cc @nesquena @timothy1ee

[timothy1ee]

Good job! The point of this homework was to explore how to work with a UITableView with embedded controls, which is a very common use case. Below is the checklist I went through when reviewing your application. For the advanced, it's important to tackle the optional challenge of making the row expand as you type, it's a good illustration of the types of challenges production iOS apps have.

• Custom cell with UITextField. You can either design this using prototype cells or a nib.
• The custom cell should have the Auto Layout constraints for the UITextField.
• The table view controller is responsible for keeping track of the UITextFields and keeping them synced with the todo items.
• For this simple system, persistence could have been implemented using Core Data, NSUserDefaults, or the file system.