Update README.md

Author: matthiasmullie

README.md

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 # Minify
 
-[![Build status](https://api.travis-ci.org/matthiasmullie/minify.svg?branch=master)](https://travis-ci.org/matthiasmullie/minify)
-[![Code coverage](http://img.shields.io/codecov/c/github/matthiasmullie/minify.svg)](https://codecov.io/github/matthiasmullie/minify)
-[![Code quality](http://img.shields.io/scrutinizer/g/matthiasmullie/minify.svg)](https://scrutinizer-ci.com/g/matthiasmullie/minify)
-[![Latest version](http://img.shields.io/packagist/v/matthiasmullie/minify.svg)](https://packagist.org/packages/matthiasmullie/minify)
-[![Downloads total](http://img.shields.io/packagist/dt/matthiasmullie/minify.svg)](https://packagist.org/packages/matthiasmullie/minify)
-[![License](http://img.shields.io/packagist/l/matthiasmullie/minify.svg)](https://github.com/matthiasmullie/minify/blob/master/LICENSE)
+[![Build status](https://img.shields.io/github/workflow/status/matthiasmullie/minify/test-suite?style=flat-square)](https://github.com/matthiasmullie/minify/actions/workflows/test.yml)
+[![Code coverage](http://img.shields.io/codecov/c/github/matthiasmullie/minify?style=flat-square)](https://codecov.io/github/matthiasmullie/minify)
+[![Code quality](http://img.shields.io/scrutinizer/g/matthiasmullie/minify?style=flat-square)](https://scrutinizer-ci.com/g/matthiasmullie/minify)
+[![Latest version](http://img.shields.io/packagist/v/matthiasmullie/minify?style=flat-square)](https://packagist.org/packages/matthiasmullie/minify)
+[![Downloads total](http://img.shields.io/packagist/dt/matthiasmullie/minify?style=flat-square)](https://packagist.org/packages/matthiasmullie/minify)
+[![License](http://img.shields.io/packagist/l/matthiasmullie/minify?style=flat-square)](https://github.com/matthiasmullie/minify/blob/master/LICENSE)
 
 
 Removes whitespace, strips comments, combines files (incl. `@import` statements and small assets in CSS files), and optimizes/shortens a few common programming patterns, such as: