Updated links to Github CI

Author: slachiewicz

.travis.yml

@@ -3,6 +3,6 @@ Plexus-Classworlds
 
 [![Apache License, Version 2.0, January 2004](https://img.shields.io/github/license/codehaus-plexus/plexus-classworlds.svg?label=License)](http://www.apache.org/licenses/)
 [![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-classworlds.svg?label=Maven%20Central)](https://search.maven.org/artifact/org.codehaus.plexus/plexus-classworlds)
-[![Build Status](https://travis-ci.org/codehaus-plexus/plexus-classworlds.svg?branch=master)](https://travis-ci.org/codehaus-plexus/plexus-classworlds)
+![Build Status](https://github.com/codehaus-plexus/plexus-classworlds/workflows/GitHub%20CI/badge.svg)
 
 Current master is now at https://github.com/codehaus-plexus/plexus-classworlds