Use spring in test env

Gemfile

@@ -10,8 +10,6 @@ gem 'jquery-rails'
 gem 'turbolinks'
 gem 'jbuilder' #, '~> 2.0'
 gem 'sdoc',          group: :doc #, '~> 0.4.0'
-gem 'spring',        group: :development
-gem 'spring-commands-rspec', group: :development
 gem 'devise'
 gem 'devise_invitable'
 gem 'haml-rails'
@@ -53,12 +51,14 @@ group :development do
   # gem 'spring-commands-rspec'
   gem 'guard-ctags-bundler'
 end
-group :development, :test, :staging do
+group :development, :test do
   gem 'factory_girl_rails'
   gem 'faker'
   gem 'pry-rails'
   gem 'pry-rescue'
   gem 'rspec-rails'
+  gem 'spring'
+  gem 'spring-commands-rspec'
 end
 group :test, :staging do
   gem 'capybara'