Add test coverage generation using simplecov

.gitignore

@@ -22,3 +22,4 @@ tags
 /.bundle
 /public/assets/
 .sass-cache/
+/coverage

Gemfile

@@ -48,6 +48,7 @@ group :development do
   gem "yard"
   gem "tolk"
   gem "bullet"
+  gem "simplecov"
 end
 
 group :test do

Gemfile.lock

@@ -162,6 +162,10 @@ GEM
       libwebsocket (~> 0.1.3)
       multi_json (~> 1.0)
       rubyzip
+    simplecov (0.7.1)
+      multi_json (~> 1.0)
+      simplecov-html (~> 0.7.1)
+    simplecov-html (0.7.1)
     sprockets (2.2.2)
       hike (~> 1.2)
       multi_json (~> 1.0)
@@ -221,6 +225,7 @@ DEPENDENCIES
   sanitize
   sass-rails
   selenium-webdriver
+  simplecov
   sqlite3
   swf_fu
   therubyracer

test/test_helper.rb

@@ -1,3 +1,6 @@
+require 'simplecov'
+SimpleCov.start 'rails'
+
 ENV["RAILS_ENV"] = "test"
 require File.expand_path('../../config/environment', __FILE__)
 require 'rails/test_help'