Update README.md

Sungbin Ji · web-flow · commit f52c9ffb030f · 2020-12-17T23:47:22.000+09:00
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-# GitMessengerBot
+# GitMessengerBot [![time tracker](https://wakatime.com/badge/github/sungbin5304/GitMessengerBot.svg)](https://wakatime.com/badge/github/sungbin5304/GitMessengerBot)
 a Messenger Auto-Reply bot application with Git service.
 
 ### 재개발 시작
