Split routes into small files for easier customization (#1852)

config/routes/poll.rb

@@ -0,0 +1,10 @@
+resources :polls, only: [:show, :index] do
+  member do
+    get :stats
+    get :results
+  end
+
+  resources :questions, controller: 'polls/questions', shallow: true do
+    post :answer, on: :member
+  end
+end