Update readme

Author: optionsome

README.md

@@ -1,4 +1,6 @@
-## graphiql-deployment [![Build Status](https://travis-ci.org/HSLdevcom/graphiql-deployment.svg?branch=master)](https://travis-ci.org/HSLdevcom/graphiql-deployment)
+## graphiql-deployment
+
+[Build](https://github.com/HSLdevcom/graphiql-deployment/actions)
 
 Deployment for HSL version of [GraphiQL](https://github.com/graphql/graphiql). Production deployment available from https://api.digitransit.fi/graphiql/hsl