From Siberia with love

Tip: Gemfile :github DSL option

Except for the speed improvement new bundler (1.1) version offers the new nice DSL option which allows you to specify the path to Github repo briefly (gem 'name', :github => 'user/repo').

gem 'rails', :github => 'rails/rails'
gem 'nokogiri', :github => 'tenderlove/nokogiri'
gem 'deep_merge', :github => 'peritor/deep_merge'