Best way to notify/add a new Integration to Home Assistant?

I’m relatively new to Home Assistant. I have just built a new node.js application for communicating with energenie MiHome devices using the energenie ENER314-RT adaptor on a raspberry pi. It interfaces with Home Assistant using MQTT and MQTT discovery.

My question is what is the best way of communicating this new application and integration to the Home Assistant community? Can an MQTT based integration be added to the Integrations section? (sorry but I couldn’t find this in FAQ etc).