Use ruby 2.1.1
Update rails to 4.0.3
Update byebug to 2.7.0
Update pg to 0.17.1
Update sass-rails to 4.0.2
Update unicorn to 4.8.2
Whitespace
Update jquery-rails to 3.1.0
Update uglifier to 2.4.0
Update coffee-script-source to 1.7.0