Add github action badge to README

Author: tdebatty

README.md

@@ -1,6 +1,9 @@
 # java-string-similarity
 
-[![Maven Central](https://maven-badges.herokuapp.com/maven-central/info.debatty/java-string-similarity/badge.svg)](https://maven-badges.herokuapp.com/maven-central/info.debatty/java-string-similarity) [![Build Status](https://travis-ci.org/tdebatty/java-string-similarity.svg?branch=master)](https://travis-ci.org/tdebatty/java-string-similarity) [![Coverage Status](https://coveralls.io/repos/tdebatty/java-string-similarity/badge.svg?branch=master&service=github)](https://coveralls.io/github/tdebatty/java-string-similarity?branch=master) [![Javadocs](http://www.javadoc.io/badge/info.debatty/java-string-similarity.svg)](http://www.javadoc.io/doc/info.debatty/java-string-similarity)
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/info.debatty/java-string-similarity/badge.svg)](https://maven-badges.herokuapp.com/maven-central/info.debatty/java-string-similarity)
+[![Build Status](https://github.com/tdebatty/java-string-similarity/actions/workflows/maven.yml/badge.svg)](https://github.com/tdebatty/java-string-similarity/actions/workflows/maven.yml)
+[![Coverage Status](https://coveralls.io/repos/tdebatty/java-string-similarity/badge.svg?branch=master&service=github)](https://coveralls.io/github/tdebatty/java-string-similarity?branch=master)
+[![Javadocs](http://www.javadoc.io/badge/info.debatty/java-string-similarity.svg)](http://www.javadoc.io/doc/info.debatty/java-string-similarity)
 
 A library implementing different string similarity and distance measures. A dozen of algorithms (including Levenshtein edit distance and sibblings, Jaro-Winkler, Longest Common Subsequence, cosine similarity etc.) are currently implemented. Check the summary table below for the complete list...