Adding doorkeeper, adding a REST API

POST /api/statuses                  Params: status (text contents), in_reply_to_id (optional)
GET  /api/statuses/:id
POST /api/statuses/:id/reblog

GET  /api/accounts/:id
GET  /api/accounts/:id/following
GET  /api/accounts/:id/followers
POST /api/accounts/:id/follow
POST /api/accounts/:id/unfollow

POST /api/follows                  Params: uri (e.g. user@domain)

OAuth authentication is currently disabled, but the API can be used with HTTP Auth.

app/controllers/api_controller.rb

@@ -1,3 +1,13 @@
 class ApiController < ApplicationController
   protect_from_forgery with: :null_session
+
+  protected
+
+  def current_resource_owner
+    User.find(doorkeeper_token.user_id) if doorkeeper_token
+  end
+
+  def current_user
+    super || current_resource_owner
+  end
 end