adding a discord channel

README.md

@@ -1,6 +1,7 @@
 
 # m-bus-parser (wired)
 
+[![Discord](https://img.shields.io/badge/Discord-Join%20Now-blue?style=flat&logo=Discord)](https://discord.gg/hpMkfYfc)
 [![Crates.io](https://img.shields.io/crates/v/m-bus-parser.svg)](https://crates.io/crates/m-bus-parser) [![Downloads](https://img.shields.io/crates/d/m-bus-parser.svg)](https://crates.io/crates/m-bus-parser) [![License](https://img.shields.io/crates/l/m-bus-parser.svg)](https://crates.io/crates/m-bus-parser) [![Documentation](https://docs.rs/m-bus-parser/badge.svg)](https://docs.rs/m-bus-parser) [![Build Status](https://github.com/maebli/m-bus-parser/actions/workflows/rust.yml/badge.svg)](https://github.com/maebli/m-bus-parser/actions/workflows/rust.yml)
 
 ### Introduction