feat: discord added.

Author: kakopappa

README.md

@@ -12,6 +12,8 @@
 
 [![Build](https://github.com/sinricpro/esp8266-esp32-sdk/actions/workflows/build-rpipicow.yml/badge.svg)](https://github.com/sinricpro/esp8266-esp32-sdk/actions/workflows/build-rpipicow.yml)
 
+[![Discord](https://img.shields.io/badge/discord-%23esp8266--esp32-blue.svg)](https://discord.gg/rq9vcRcSqA) </br>
+  
 ## Installation
 
 ### VS Code & PlatformIO:
@@ -136,3 +138,5 @@ mySwitch.sendPushNotification("Hello SinricPro!");
 * Custom devices
 ---
 
+## Join the community!
+Join us on our [Official Discord Server](https://discord.gg/rq9vcRcSqA)!