Gemfile

source 'https://rubygems.org'

gemspec

mygem.gemspec

Gem::Specification.new do |s|
  s.name        = 'mygem'
  s.version     = '1.0.0'
  s.platform    = Gem::Platform::RUBY

  s.required_rubygems_version = '>= 1.3.6'
  s.rubyforge_project         = 'n/a'

  s.add_dependency 'activesupport', '< 4.0.0'

  s.add_development_dependency 'rspec-rails'
  
  s.require_path = 'lib'
end