Please see the Add-On documentation
This repository contains an example Add-On for DocumentCloud. It is designed to be copied and modified to allow one to easily write Add-Ons to bring custom functionality to DocumentCloud. Please use the green "Use this Template" button to create a new repository instead of forking. This will be easier as the new Add-On will diverge significantly from this code base.
After copying the template, remember to update this README file to describe your new Add-On! It is a good idea to leave the link to the Add-On documentation at the top of the file though.