New Sample: auction
New model: User
New item model
Implement Delegator#pure
Named subject
Add ApplicationContext
Add pry-rails
Add slim-rails
Add TopController
Implement Auction
ActiveSupport defined? bug
Without default behaviors
Implement AuthenticationController#sign_up
Implement Users#create
Implement Authentication#sign_in, #sign_out, #log_in
Add Bid model
Implement Users#show
Replace relative time method
Install bower
Add ItemsController