Guard added

Gemfile

@@ -67,6 +67,12 @@ group :development, :test do
 
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'
+
+  # Helps run tests automatically after changes
+  # TODO: not sure all these packages are required (http://buildingrails.com/a/rails_automated_testing_setup_for_beginners)
+  gem 'guard-rails'
+  gem 'minitest-rails'
+  gem 'guard-minitest'
 end
 
 # Zurb Foundation