Code review changes: http://codereview.stackexchange.com/questions/46357/is-this-a-decent-first-objective-c-project-and-can-others-learn-from-it

All of the suggestions were at least partially implemented.
I thought there were some mistakes / unintentional oversights
on the reviewer's part; however, overall I felt it was good
advice.

Again, my hope is that this project is a model learning tool
for beginning Objective-C developers.