kai's midterm comments

Hey James!

Nice lil app. I like your error handling. :) I added some suggestions inline about how you might also accept more varied user input--see the 'files changed' tab. Side note: the changes on lines 1-12 are just my text editor trimming extra white space, so you can ignore 

Part of the assignment (I'd say probably the most important part) was to make it object oriented, but you haven't created any classes. If you're interested in returning to this assignment you could recreate it with classes which you instantiate and use in the execution of your app.