add korean language in locales

README.md

@@ -20,7 +20,7 @@ fill out `config.js` as your infomation.
   **You should generate the token in admin user, not owner.**
   If you generate the token in owner user, `missing_scope` error will be occurred.
 * `inviteToken`: an optional security measure - if it is set, then that token will be required to get invited.
-* `locale`: application language (currently `en`, `de`, `es`, `fr`, `pt`, `zh-CN`, `zh-TW` and `ja` available).
+* `locale`: application language (currently `en`, `de`, `es`, `fr`, `pt`, `zh-CN`, `zh-TW`, `ja` and `ko` available).
 
   You can test your token via curl:
 

locales/ko.json

@@ -0,0 +1,6 @@
+{
+	"HEADER": "Slack의 %s에 가입하기 위한 이메일 주소를 입력하세요!",
+	"ENTER_EMAIL": "이메일 주소를 입력하세요",
+	"ENTER_TOKEN": "초대 토큰을 입력하세요",
+	"TITLE": "Slack의 %s 커뮤니티에 참여하세요!"
+}