Merge pull request #86 from broadinstitute/ct-update-readme-build-badge

change TravisCI badge to Actions badge in readme

README.md

@@ -1,5 +1,5 @@
 [![Docker Repository on Quay](https://quay.io/repository/broadinstitute/viral-core/status "Docker Repository on Quay")](https://quay.io/repository/broadinstitute/viral-core)
-[![Build Status](https://travis-ci.com/broadinstitute/viral-core.svg?branch=master)](https://travis-ci.com/broadinstitute/viral-core)
+[![Build Status](https://github.com/broadinstitute/viral-core/actions/workflows/build.yml/badge.svg?branch=master)](https://github.com/broadinstitute/viral-core/actions)
 [![Documentation Status](https://readthedocs.org/projects/viral-core/badge/?version=latest)](http://viral-core.readthedocs.io/en/latest/?badge=latest)
 <!--
 [![Coverage Status](https://coveralls.io/repos/github/broadinstitute/viral-core/badge.svg?branch=master)](https://coveralls.io/github/broadinstitute/viral-core?branch=master)