add discord link

readme.md

@@ -2,7 +2,7 @@
 
 [![Current Version](https://img.shields.io/github/tag/qmk/qmk_firmware.svg)](https://github.com/qmk/qmk_firmware/tags)
 [![Build Status](https://travis-ci.org/qmk/qmk_firmware.svg?branch=master)](https://travis-ci.org/qmk/qmk_firmware)
-[![Gitter](https://img.shields.io/gitter/room/qmk/qmk_firmware.js.svg)](https://gitter.im/qmk/qmk_firmware)
+[![Discord](https://img.shields.io/discord/440868230475677696.svg)](https://discord.gg/Uq7gcHh)
 [![Docs Status](https://img.shields.io/badge/docs-ready-orange.svg)](https://docs.qmk.fm)
 [![GitHub contributors](https://img.shields.io/github/contributors/qmk/qmk_firmware.svg)](https://github.com/qmk/qmk_firmware/pulse/monthly)
 [![GitHub forks](https://img.shields.io/github/forks/qmk/qmk_firmware.svg?style=social&label=Fork)](https://github.com/qmk/qmk_firmware/)