Added discord badge

README.md

@@ -6,7 +6,9 @@ An open source CSE Middleware for Education.
 Version 2024.04
 
 [![oneM2M](https://img.shields.io/badge/oneM2M-f00)](https://www.onem2m.org) [![Python](https://img.shields.io/badge/Python-3.10-blue)](https://www.python.org) [![Maintenance](https://img.shields.io/badge/Maintained-Yes-green.svg)](https://github.com/ankraft/ACME-oneM2M-CSE/graphs/commit-activity) [![License](https://img.shields.io/badge/License-BSD%203--Clause-green)](LICENSE) [![MyPy](https://img.shields.io/badge/MyPy-covered-green)](LICENSE)  
-[![Mastodon](https://img.shields.io/badge/-@[email protected]?label=mastodon&logo=mastodon&style=social)](https://mstdn.social/@acmeCSE)
+[![Mastodon](https://img.shields.io/badge/-@[email protected]?label=mastodon&logo=mastodon&style=social)](https://mstdn.social/@acmeCSE)  
+[![Discord](https://img.shields.io/badge/-ACME%20oneM2M%20CSE-FFF?label=discord&logo=discord&style=social)](https://discord.gg/C7Qx33Xw)
+
 ## Introduction
 
 This oneM2M compliant CSE implements a subset of the oneM2M standard (see [http://www.onem2m.org](http://www.onem2m.org)). The intention is to provide an easy to install, extensible, and easy to use and maintainable CSE for educational purposes.