Initial Users and Statuses commit.

*Added the User and Status model and their respective
controllers/views..
*Users have profile pages where you can see their name, email, bio, and
statuses posted.
*You can post a status on behalf of any user and that status will become
bound to that user.
*The home page lists all statuses by all users.
*The home page has a link to a list of all users.
*The list of all users has a link to add a new user.
*Probably some more stuff I'm forgetting.