rspec/rspec-expectations

guard 'rspec', :version => 2 do
  watch(/^spec\/(.*)_spec.rb/)
  watch(/^lib\/(.*)\.rb/)         { |m| "spec/#{m[1]}_spec.rb" }
  watch(/^spec\/spec_helper.rb/)  { "spec" }
  watch(/^lib\/rspec\/matchers\/built_in/)  { "spec" }
end