Add Guardfile

Guardfile

@@ -0,0 +1,11 @@
+guard :cucumber, cli: '--format pretty' do
+  watch(%r{\Afeatures/.+\.feature\z})
+  watch(%r{\Afeatures/support/.+\.rb\z})                { 'features' }
+  watch(%r{\Afeatures/step_definitions/.+_steps\.rb\z}) { 'features' }
+end
+
+guard :rspec do
+  watch(%r{\Aspec/.+_spec\.rb\z})
+  watch(%r{\Alib/(.+)\.rb\z})     { |m| "spec/#{m[1]}_spec.rb" }
+  watch('spec/spec_helper.rb')    { 'spec' }
+end