Update README.md

Author: BenLauwens

README.md

@@ -4,8 +4,7 @@ A discrete event process oriented simulation framework written in [Julia](http:/
 
 ## Build Status & Coverage
 
-[![Build Status](https://travis-ci.org/BenLauwens/SimJulia.jl.svg?branch=master)](https://travis-ci.org/BenLauwens/SimJulia.jl)
-[![Build status](https://ci.appveyor.com/api/projects/status/djuiegytv44pr54c/branch/master?svg=true)](https://ci.appveyor.com/project/BenLauwens/simjulia-jl)
+[![Build Status](https://github.com/benlauwens/SimJulia.jl/workflows/CI/badge.svg)](https://github.com/benlauwens/SimJulia.jl/actions?query=workflow%3ACI+branch%3Amaster)
 [![Coverage Status](https://coveralls.io/repos/github/BenLauwens/SimJulia.jl/badge.svg?branch=master)](https://coveralls.io/github/BenLauwens/SimJulia.jl?branch=master)
 [![codecov](https://codecov.io/gh/BenLauwens/SimJulia.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/BenLauwens/SimJulia.jl)