Update README.md

Author: javadev

README.md

@@ -19,6 +19,7 @@ underscore-java
 [![Scrutinizer](https://img.shields.io/scrutinizer/g/javadev/underscore-java.svg)](https://scrutinizer-ci.com/g/javadev/underscore-java/)
 [![Build Status](https://dev.azure.com/javadevazure/underscore-java/_apis/build/status/javadev.underscore-java?branchName=main)](https://dev.azure.com/javadevazure/underscore-java/_build/latest?definitionId=1&branchName=main)
 [![Hits-of-Code](https://hitsofcode.com/github/javadev/underscore-java)](https://hitsofcode.com/view/github/javadev/underscore-java)
+[![codebeat badge](https://codebeat.co/badges/3c32993b-056e-4e34-a4b6-7e7792c6c123)](https://codebeat.co/projects/github-com-javadev-underscore-java-main)
 ![Java Version](https://img.shields.io/badge/java-%3E%3D%201.8-success)
 [![](https://img.shields.io/github/forks/javadev/underscore-java)](https://github.com/javadev/underscore-java/fork)