note Gemfile often used

Gemfile

source 'http://rubygems.org'

gem 'rails', '~> 3.1.0'
gem 'rake', '0.8.7'
gem 'mongoid'
gem 'bson_ext'
gem 'devise'
gem 'omniauth'
gem 'haml-rails'
gem 'jquery-rails'

group :assets do
  gem 'sass-rails', '~> 3.1.0'
  gem 'coffee-rails', '~> 3.1.0'
  gem 'uglifier'
end

group :development, :test, :cucumber do
  gem 'ruby-debug19'
  gem 'rspec-rails'
  gem 'mongoid-rspec'
  gem 'cucumber-rails'
  gem 'capybara'
  gem 'factory_girl_rails'
  gem 'database_cleaner'
  gem 'spork'
end