test is now default rake task
Add more feature tests

These are very subject to change, it's a mostly static site so these
tests tend to feel trivial, but I'll keep them for now anyways :D
Change with to text on static pages test
Add post.rb

This is the main class that will model posts, ideally there will be a
rake task to insantiate a post object and add the proper data into the
manifest (not sure about json vs. yaml here).
Scaffold for testing rake tasks