Replace test badge

Author: jwagner

README.md

@@ -1,6 +1,6 @@
 # smartcrop-sharp
 
-[![Build Status](https://travis-ci.org/jwagner/smartcrop-sharp.svg?branch=master)](https://travis-ci.org/jwagner/smartcrop-sharp)
+[![Tests](https://github.com/jwagner/smartcrop-sharp/actions/workflows/tests.yml/badge.svg)](https://github.com/jwagner/smartcrop-sharp/actions/workflows/tests.yml)
 
 This is an adapter module for using [smartcrop.js](https://github.com/jwagner/smartcrop.js)
 with node.js using [sharp](https://github.com/lovell/sharp) for image decoding.