Add spec/controllers/index_controller_spec.rb
Add spec/views/index/index.html.erb_spec.rb
Add spec/routes_spec.rb
Fix index_controller_spec.rb
Add application.html.erb_spec.rb
Rename routes_spec.rb to index_route_spec.rb and Move to ./spec/routing
Fix Gemfile to include webrat
Implement the feature that enable user to access welcome page