add link to discord

Author: tsolakoua

README.md

@@ -2,6 +2,7 @@
 
 [![Build Status](https://travis-ci.org/amadeus4dev/amadeus-java.svg?branch=master)][travis]
 [![Contact Support](https://github.com/amadeus4dev/amadeus-java/raw/master/.github/images/support.svg?sanitize=true)][support]
+[![Discord](https://img.shields.io/discord/696822960023011329?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/cVrFBqx)
 
 Amadeus provides a rich set of APIs for the travel industry. For more details, check out the [Amadeus for Developers Portal](https://developers.amadeus.com) or the [SDK class reference](https://amadeus4dev.github.io/amadeus-java/).