Add Korean Community

README.md

@@ -105,6 +105,7 @@ forums
 - [`Atom`](http://atom-slack.herokuapp.com/) channel on Slack
 - [`electron-ru`](https://telegram.me/electron_ru) *(Russian)*
 - [`electron-br`](https://electron-br.slack.com) *(Brazilian Portuguese)*
+- [`electron-kr`](https://electron-kr.slack.com/) *(Korean)*
 - [`electron-jp`](https://electron-jp.slack.com) *(Japanese)*
 - [`electron-tr`](http://electron-tr.herokuapp.com) *(Turkish)*
 - [`electron-id`](https://electron-id.slack.com) *(Indonesia)*