Changed root route.  Updated user views posts index spec
Removed pages controller.  Fixed some test issues.
Added meows controller and routes.  Added meows button to post index page
Added meows controller
Added meow model and migration.
Updated meow class and user class.  Updated relevant tests.
Added method to check if user has meow'd a post.
Added has_meow method to post model.  Updated factory for meows.
Added meow destroy button and associated tests