add doorkeeper to routes

Author: martaribeiro

config/routes.rb

@@ -2,6 +2,8 @@
 
 # rubocop:disable Metrics/BlockLength
 Rails.application.routes.draw do
+
+  use_doorkeeper
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
 
   devise_for(:users, controllers: {