Add Gitter badge

README-EN.md

@@ -5,8 +5,9 @@ Transmittable ThreadLocal(TTL)
 [![Coverage Status](https://img.shields.io/codecov/c/github/alibaba/transmittable-thread-local/master.svg)](https://codecov.io/github/alibaba/transmittable-thread-local?branch=master&view=all#sort=coverage&dir=asc)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.alibaba/transmittable-thread-local/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.alibaba/transmittable-thread-local/)
 [![GitHub release](https://img.shields.io/github/release/alibaba/transmittable-thread-local.svg)](https://github.com/alibaba/transmittable-thread-local/releases)  
-[![Dependency Status](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca/badge.svg)](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca)
+[![Join the chat at https://gitter.im/alibaba/transmittable-thread-local](https://badges.gitter.im/alibaba/transmittable-thread-local.svg)](https://gitter.im/alibaba/transmittable-thread-local?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![GitHub issues](https://img.shields.io/github/issues/alibaba/transmittable-thread-local.svg)](https://github.com/alibaba/transmittable-thread-local/issues)
+[![Dependency Status](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca/badge.svg)](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca)
 [![License](https://img.shields.io/badge/license-Apache%202-4EB1BA.svg)](https://www.apache.org/licenses/LICENSE-2.0.html)
 
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README.md

@@ -5,8 +5,9 @@ Transmittable ThreadLocal(TTL)
 [![Coverage Status](https://img.shields.io/codecov/c/github/alibaba/transmittable-thread-local/master.svg)](https://codecov.io/github/alibaba/transmittable-thread-local?branch=master&view=all#sort=coverage&dir=asc)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.alibaba/transmittable-thread-local/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.alibaba/transmittable-thread-local/)
 [![GitHub release](https://img.shields.io/github/release/alibaba/transmittable-thread-local.svg)](https://github.com/alibaba/transmittable-thread-local/releases)  
-[![Dependency Status](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca/badge.svg)](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca)
+[![Join the chat at https://gitter.im/alibaba/transmittable-thread-local](https://badges.gitter.im/alibaba/transmittable-thread-local.svg)](https://gitter.im/alibaba/transmittable-thread-local?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![GitHub issues](https://img.shields.io/github/issues/alibaba/transmittable-thread-local.svg)](https://github.com/alibaba/transmittable-thread-local/issues)
+[![Dependency Status](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca/badge.svg)](https://www.versioneye.com/user/projects/56c0a36218b271002c699dca)
 [![License](https://img.shields.io/badge/license-Apache%202-4EB1BA.svg)](https://www.apache.org/licenses/LICENSE-2.0.html)
 
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