fix up the example app for getting started guide [ci skip]

guides/code/getting_started/app/controllers/home_controller.rb → guides/code/getting_started/app/controllers/welcome_controller.rb

-class HomeController < ApplicationController
+class WelcomeController < ApplicationController
   def index
   end
-
 end

guides/code/getting_started/app/helpers/home_helper.rb

-module HomeHelper
-end

guides/code/getting_started/app/helpers/welcome_helper.rb

+module WelcomeHelper
+end

guides/code/getting_started/config/routes.rb

@@ -53,7 +53,7 @@
 
   # You can have the root of your site routed with "root"
   # just remember to delete public/index.html.
-  root :to => "home#index"
+  root :to => "welcome#index"
 
   # See how all your routes lay out with "rake routes"
 

guides/code/getting_started/test/functional/home_controller_test.rb → guides/code/getting_started/test/functional/welcome_controller_test.rb

 require 'test_helper'
 
-class HomeControllerTest < ActionController::TestCase
+class WelcomeControllerTest < ActionController::TestCase
   test "should get index" do
     get :index
     assert_response :success
   end
-
 end