update internship controller spec valid attributes
update rspec-rails
add capybara to spec_helper
add pry to gemfile
fix css bug
add password_digest to user model
use has_secure_password for user model
add session controller and actions
add current_user method and helper
add session controller and view
change user controller
add new translations to locale files
add sign up/in custom routes
add sign in/up links to application layout
add password and password confirmation fields to user form
change root to session#new
Merge branch 'add_authentication'