docs(badge): replace build badge with github actions one

Author: floydspace

README.md

@@ -3,7 +3,7 @@
 
 The DynamoDB Migrations Tool Command Line Interface (CLI).
 
-[![Build Status](https://travis-ci.org/floydspace/dynamodb-migrations-tool.svg?branch=master)](https://travis-ci.org/floydspace/dynamodb-migrations-tool)
+[![Build Status](https://img.shields.io/github/workflow/status/floydspace/dynamodb-migrations-tool/release)](https://github.com/floydspace/dynamodb-migrations-tool/actions)
 [![Coverage Status](https://coveralls.io/repos/github/floydspace/dynamodb-migrations-tool/badge.svg?branch=master)](https://coveralls.io/github/floydspace/dynamodb-migrations-tool?branch=master)
 [![npm version](https://badge.fury.io/js/dynamit-cli.svg)](https://badge.fury.io/js/dynamit-cli)
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)