add i18n tests

Gemfile

@@ -70,6 +70,9 @@ end
 
 group :development, :test do
   gem 'ruby-prof'
+end
+
+group :test do
   gem 'rspec-rails'
   gem 'factory_girl_rails', '~> 4.0'
   gem 'faker'
@@ -77,6 +80,10 @@ group :development, :test do
   # webkit and poltergeist don't seem to work yet
   gem 'database_cleaner'
   gem 'simplecov', require: false
+  # need to include rspec components before i18n-spec or rake fails in test environment
+  gem 'rspec-core'
+  gem 'rspec-expectations'
+  gem 'i18n-spec'
 end
 
 # Gems left for backwards compatibility