update badge in README.rts
@@ -23,9 +23,9 @@ Status shields
:target: https://dev.azure.com/gammapy/gammapy/_build/latest?definitionId=1
:alt: Build Status
-* .. image:: http://img.shields.io/travis/gammapy/gammapy.svg?branch=master
- :target: https://travis-ci.com/gammapy/gammapy
- :alt: Test Status Travis-CI
+* .. image:: https://github.com/gammapy/gammapy/workflows/CI/badge.svg?branch=master
+ :target: https://github.com/gammapy/gammapy/actions?query=workflow%3ACI+branch%3Amaster
+ :alt: Github actions CI
* .. image:: https://codecov.io/gh/gammapy/gammapy/branch/master/graph/badge.svg
:target: https://codecov.io/gh/gammapy/gammapy
