Update README.md

Author: tomFlidr

README.md

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 # Example - Chat
 
-[![Latest Stable Version](https://img.shields.io/badge/Stable-v1.3.0-brightgreen.svg?style=plastic)](https://github.com/web-dev-server/example-chat/releases)
+[![Latest Stable Version](https://img.shields.io/badge/Stable-v1.3.1-brightgreen.svg?style=plastic)](https://github.com/web-dev-server/example-chat/releases)
 [![License](https://img.shields.io/badge/Licence-BSD-brightgreen.svg?style=plastic)](https://github.com/web-dev-server/chat-example-pure-js/blob/master/LICENCE.md)
 
 Chat example with session authentication. Client scripts written with pure Javascript, no framework needed.