Update README.md

Author: velopert

Diff for: README.md

@@ -1,3 +1,20 @@
 ## velog-client
 
-NEXT CLIENT FOR VELOG
+> Velog is a blog platform for developers. It provides compfy markdown editor with syntax highlighter enabled. Currently, the service is only available in Korean.
+
+Website link: https://velog.io/
+
+Backend project of service is at another Repo - [velog-backend](https://github.com/velopert/velog-server)
+
+### Project Stack
+
+- React
+- React Router
+- TypeScript
+- Redux
+- Apollo GraphQL
+- Styled Components
+- Remark
+- Codemirror
+- Serverless Framework
+- AWS Lambda