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README.md

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 # RT-Thread #
 
 [![Build Status](https://travis-ci.org/RT-Thread/rt-thread.png)](https://travis-ci.org/RT-Thread/rt-thread)
+[![gitter](https://badges.gitter.im/RT-Thread/rt-thread.png)](https://gitter.im/RT-Thread/rt-thread)
 
 RT-Thread is an open source real-time operating system for embedded devices from China. RT-Thread RTOS is a scalable real-time operating system: a tiny kernel for ARM Cortex-M0, Cortex-M3/4, or a full feature system in ARM Cortex-A8, ARM Cortex-A9 DualCore etc.