README.md

@@ -1,7 +1,11 @@
 [![Crates.io](https://img.shields.io/crates/v/cfdp-rs)](https://crates.io/crates/cfdp-rs)
 [![docs.rs](https://img.shields.io/docsrs/cfdp-rs)](https://docs.rs/cfdp-rs)
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+<!--
+Does not work right now, I'd need to host that myself.
 [![coverage](https://shields.io/endpoint?url=https://absatsw.irs.uni-stuttgart.de/projects/cfdp/coverage-rs/latest/coverage.json)](https://absatsw.irs.uni-stuttgart.de/projects/cfdp/coverage-rs/latest/index.html)
+-->
+[![matrix chat](https://img.shields.io/matrix/sat-rs%3Amatrix.org)](https://matrix.to/#/#sat-rs:matrix.org)
 
 cfdp-rs - High level Rust crate for CFDP components
 ======================