Update README.md

Johan Brichau · web-flow · commit 755c6f17a993 · 2021-05-13T11:44:44.000+02:00
diff --git a/README.md b/README.md
@@ -28,7 +28,7 @@ The latest Grease version is supported on the following platforms and versions,
 |                 |              | [![Build status: Gemstone-3.1.0.6](http://badges.herokuapp.com/travis/SeasideSt/Grease?branch=master&env=BUILD_NAME=GemStone-3.1.0.6&label=3.1.0.6)](http://travis-ci.org/SeasideSt/Grease) |
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-Coveralls (experimental): [![Coverage Status](https://coveralls.io/repos/github/SeasideSt/Grease/badge.svg?branch=test-coveralls)](https://coveralls.io/github/SeasideSt/Grease?branch=test-coveralls)
+Builds via github actions: [![smalltalkCI](https://github.com/SeasideSt/Grease/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/SeasideSt/Grease/actions/workflows/ci.yml)
 
 ## Installation
 
