ceviche-rs: update readme (#31)

README.md

@@ -2,7 +2,6 @@
 
 [![Cargo](https://img.shields.io/crates/v/ceviche.svg)](https://crates.io/crates/ceviche)
 [![Documentation](https://docs.rs/ceviche/badge.svg)](https://docs.rs/ceviche)
-[![Build Status](https://api.travis-ci.org/Devolutions/ceviche-rs.svg?branch=master)](https://travis-ci.org/Devolutions/ceviche-rs)
-[![Build Status Appveyor](https://ci.appveyor.com/api/projects/status/qhnntidua2kh041h?svg=true)](https://ci.appveyor.com/project/ekse/ceviche-rs)
+![Build](https://github.com/devolutions/ceviche-rs/actions/workflows/build.yaml/badge.svg)
 
-Service/daemon wrapper. Supports Windows and macOS.
+Service/daemon wrapper. Supports Windows, Linux (systemd) and macOS.