Preliminary styling for login and register pages

Added styling for the login and sign-up pages.  Ultimately, I'd like the user to be able to click the sign in or sign up page, and to have a transition to show the form on the home page. But the redirect is easier for now (ruby on rails confuses the fuck out of me).

Here's the current homepage:
![image](https://f.cloud.github.com/assets/1596335/1856506/a5b62f54-7755-11e3-8eff-f15725062f29.png)


And the signup page - the sign in has almost identical styling:
![image](https://f.cloud.github.com/assets/1596335/1856508/c600825a-7755-11e3-851f-24ec2dae2290.png)