Merge pull request #133 from twitter/1_8_7

Make yet another exception for 1.8.7

Author: oreoshake

Gemfile

@@ -11,4 +11,5 @@ group :test do
   gem 'growl'
   gem 'rb-fsevent'
   gem 'coveralls', :platform => :ruby_19
+  gem 'i18n', '< 0.7.0', :platform => :ruby_18
 end