Refactor controller spec using Macros, set_current_user and current_user
Fix bug in Macros, Add shared_examples
Use capybara, Add first feature spec : user log in
Add Database_cleaner
In Video show, if video is in the queue, hide the 'Add to Queue' button
Add gem
use Macro to refactor user_sign_in_spec
Add queue relative operation spec
Refactor queue relative spec
Merge pull request #6 from jychen7/week3b

Week3b