GCloud hosted app engine notification service.
This repo contains a submodule, so this is how you should clone it:
git clone --recursive https://github.com/OpenAgricultureFoundation/notification-service
If you didn't clone it that way, simply do:
cd notification-service
git submodule update --init
When you want to update the submodule to its latest master branch:
git submodule update --remote