Update README.md

Author: hsluoyz

README.md

@@ -3,6 +3,8 @@
 [![codebeat badge](https://codebeat.co/badges/8b0e8982-7b3d-47d5-b774-5af9c29383df)](https://codebeat.co/projects/github.zerozr99.workers.dev-jcasbin-vertx-authz-master)
 [![GitHub Actions](https://github.com/jcasbin/vertx-authz/workflows/build/badge.svg)](https://github.com/jcasbin/vertx-authz/actions)
 [![codecov](https://codecov.io/gh/jcasbin/vertx-authz/branch/master/graph/badge.svg?token=7nzieLLEUn)](https://codecov.io/gh/jcasbin/vertx-authz)
+[![Javadocs](https://www.javadoc.io/badge/org.casbin/vertx-authz.svg)](https://www.javadoc.io/doc/org.casbin/vertx-authz)
+[![Maven Central](https://img.shields.io/maven-central/v/org.casbin/vertx-authz.svg)](https://mvnrepository.com/artifact/org.casbin/vertx-authz/latest)
 [![Release](https://img.shields.io/github/release/jcasbin/vertx-authz.svg)](https://github.com/jcasbin/vertx-authz/releases/latest)
 [![Discord](https://img.shields.io/discord/1022748306096537660?logo=discord&label=discord&color=5865F2)](https://discord.gg/S5UjpzGZjN)