Replace logo, fix #57 - delete/unreblog/unfavourite API, fix #45 - app

registration API

app/controllers/api_controller.rb

@@ -27,4 +27,8 @@ class ApiController < ApplicationController
   def current_user
     super || current_resource_owner
   end
+
+  def render_empty
+    render json: {}, status: 200
+  end
 end