Update README.md

Author: deepbig

README.md

@@ -6,3 +6,19 @@ My name is Hongsuk and i'm a creator of lulluland!
 
 🔭 I’m **currently building [lulluland](https://github.com/deepbig/lulluland)** open source effort tracker app.
 
+[![Readme Card](https://github-readme-stats.vercel.app/api/pin/?username=deepbig&repo=lulluland)](https://github.com/deepbig/lulluland)
+
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