Changes README.md

-# Firebase Codelab: FriendlyChat
-
-This is the source code for the Firebase FriendlyChat codelab. It includes start and end versions of the
-code for Web and Cloud Functions. To get started open the codelab instructions:
-
- - [Firebase Web Codelab](https://codelabs.developers.google.com/codelabs/firebase-web/).
- - [Firebase SDK for Cloud Functions Codelab](https://codelabs.developers.google.com/codelabs/firebase-cloud-functions/).
-
-
-## How to make contributions?
-Please read and follow the steps in the [CONTRIBUTING.md](CONTRIBUTING.md)
-
-
-## License
-See [LICENSE](LICENSE)
+# SBM(Silver Business Model) Demo Code
+- This is the source code of SBM Demo for KVP.
+- Based on the Firebase FriendlyChat codelab codes.

-# Firebase Web Codelab - Start code
-
-This folder contains the starting code for the [Firebase: Build a Real Time Web Chat App Codelab](https://codelabs.developers.google.com/codelabs/firebase-web/).
-
-If you'd like to jump directly to the end and see the finished code head to the [web](../web) directory.
+# SBM Demo Actual Code
+- index.html, phonecall.html, messages.html
+- main.js, index.js
+- Based on firebase tutorial - Friendly Chat Web-Start codes.