Adding GitHub Actions badge

Author: Jochen Parmentier

README.md

@@ -1,6 +1,6 @@
 # Dephell Discover
 
-[![travis](https://travis-ci.org/dephell/dephell_discover.svg?branch=master)](https://travis-ci.org/dephell/dephell_discover)
+![GitHub Actions Master branch](https://github.com/actions/dephell_discover/workflows/main/badge.svg?branch=master)
 [![appveyor](https://ci.appveyor.com/api/projects/status/github/dephell/dephell_discover?svg=true)](https://ci.appveyor.com/project/orsinium/dephell-discover)
 [![MIT License](https://img.shields.io/pypi/l/dephell-discover.svg)](https://github.com/dephell/dephell_discover/blob/master/LICENSE)