This is a simple implementation of a ShipStream Merchant Plugin which is meant for demonstration purposes and primarily to confirm correct setup of the ShipStream Merchant Plugin Middleware.
See the ShipStream Merchant Plugin Middleware Installation for the middleware environment installation which includes the installation of this test plugin.
$ bin/modman init
$ bin/modman clone https://github.com/shipstream/plugin-test.git
$ bin/mwrun ShipStream_Test update_ip