Add Maven Central badge

Author: kinow

README.md

@@ -3,6 +3,7 @@
 ![](https://github.com/tupilabs/HumanNameParser.java/workflows/CI/badge.svg)
 [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=tupilabs_HumanNameParser.java&metric=alert_status)](https://sonarcloud.io/dashboard?id=tupilabs_HumanNameParser.java)
 [![Coverage](https://sonarcloud.io/api/project_badges/measure?project=tupilabs_HumanNameParser.java&metric=coverage)](https://sonarcloud.io/dashboard?id=tupilabs_HumanNameParser.java)
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.tupilabs/human-name-parser/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.tupilabs/human-name-parser)
 
 Java port Author: Bruno P. Kinoshita