installed RSpec and generated a devise model named User
new users can register
existing users can sign in
users are prompted to sign in before submitting a link
new post can be created
new post can be saved and displayed on root (index) page
new post is now saved with user_id
posts now have titles
configured Gemfile and installed factory_girl
comments can be created and viewed
refactored tests for 'visitor signs up'
refactored tests for 'visitor signs out'
added test for 'visitor views all posts on front page'
added test for 'signed-in user views all posts on front page
updated test for validation and association of Post model
updated test for validation and association of Comment model
refactored tests for 'user submits link'
refactored test for 'visitor tries to submit a post'
all specs passing and refactored with factorygirl
created model Votes with polymorphic association to votables (comments and posts)