Update README.md

StepfenShawn · web-flow · commit 4e058def8255 · 2020-07-08T17:00:56.000+08:00
diff --git a/README.md b/README.md
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 # The Algorithms - Java
 [![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.me/TheAlgorithms/100)
+[![Gitter chat](https://img.shields.io/badge/Chat-Gitter-ff69b4.svg?label=Chat&logo=gitter&style=flat-square)](https://gitter.im/TheAlgorithms)&nbsp;
 
 
 NOTE: A [Development](https://github.com/TheAlgorithms/Java/tree/Development) branch is made for this repo where we're trying to migrate the existing project to a Java project structure. You can switch to [Development](https://github.com/TheAlgorithms/Java/tree/Development) branch for contributions. Please refer [this issue](https://github.com/TheAlgorithms/Java/issues/474) for more info.
