Update README.md

Author: remcoder

README.md

@@ -1,6 +1,8 @@
-# GCode Preview [![npm version](http://img.shields.io/npm/v/gcode-preview.svg?style=flat)](https://npmjs.org/package/gcode-preview "View this project on npm") [![MIT license](http://img.shields.io/badge/license-MIT-brightgreen.svg)](http://opensource.org/licenses/MIT) <a href="https://www.buymeacoffee.com/remcoder" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/default-orange.png" alt="Buy Me A Coffee" height="25" width="106"></a>
+# GCode Preview [![npm version](http://img.shields.io/npm/v/gcode-preview.svg?style=flat)](https://npmjs.org/package/gcode-preview "View this project on npm") [![MIT license](http://img.shields.io/badge/license-MIT-brightgreen.svg)](http://opensource.org/licenses/MIT) <a href="https://www.buymeacoffee.com/remcoder" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/default-orange.png" alt="Buy Me A Coffee" height="25" width="106">
 A simple [G-code](https://en.wikipedia.org/wiki/G-code) parser & viewer with 3D printing in mind. Written in Typescript.
 
+Join us on </a> <a href="https://discord.gg/w2bsGRE6S4">discord</a>
+
 ## feature summary
 - multi-color
 - tube geometry (experimental)