Assignment 2 and Updates to Assignment 1

Here's the Person Model assignment and some updates to trim down assignment 1.
As far as I know, in this case after a function declaration, it's optional. There are many cases in which you don't want semicolons after curly brackets so I omit them here. Here's a codecademy blog post about the issue: http://www.codecademy.com/blog/78-your-guide-to-semicolons-in-javascript