add i18n tests

Gemfile.lock

@@ -118,9 +118,13 @@ GEM
     highline (1.6.19)
     hike (1.2.3)
     i18n (0.6.1)
+    i18n-spec (0.4.0)
+      iso
     inherited_resources (1.3.1)
       has_scope (~> 0.5.0)
       responders (~> 0.6)
+    iso (0.2.0)
+      i18n
     journey (1.0.4)
     jquery-rails (2.1.3)
       railties (>= 3.1.0, < 5.0)
@@ -324,6 +328,7 @@ DEPENDENCIES
   factory_girl_rails (~> 4.0)
   faker
   haml-rails
+  i18n-spec
   inherited_resources
   jquery-rails
   kaminari
@@ -336,6 +341,8 @@ DEPENDENCIES
   rails (~> 3.2.9)
   rails-settings-cached (= 0.2.4)
   resque
+  rspec-core
+  rspec-expectations
   rspec-rails
   ruby-prof
   sass-rails (~> 3.2.3)