chore: improve readme

README.md

@@ -1,11 +1,44 @@
-# SQL Chat
+![SQL Chat banner](https://raw.githubusercontent.com/bytebase/sqlchat/main/public/banner.webp)
 
-### One-Click Deploy to Vercel
+<div align="center">
+  <h3>SQL Chat</h3>
+  <a href="https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fbytebase%2Fsqlchat&env=OPENAI_API_KEY"><img src="https://img.shields.io/badge/deploy%20on-Vercel-brightgreen.svg?style=for-the-badge&logo=vercel" alt="vercel"></a>
+</div>
 
-[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fbytebase%2Fsqlchat&env=OPENAI_API_KEY)
+## What
 
-### Development
+SQL Chat is a chat based SQL Client.
+
+![Screenshot](https://raw.githubusercontent.com/bytebase/sqlchat/main/public/screenshot1.webp)
+## Why
+
+As we enter the [Developer Tools 2.0 era](https://www.sequoiacap.com/article/ai-powered-developer-tools/),
+there is a massive opportunity to rebuild the existing tools using chat-based interface. SQL Client
+is no exception. Instead of navigating across many UI controls, a chat-based interface is much
+more intuitive. Of course, only if that works, and our goal is to deliver that experience.
+
+## How
+
+SQL Chat is built by Next.js, it supports following databases and will add more over the time:
+* MySQL
+* PostgreSQL
+
+## Data Privacy
+
+All database conenction configs are stored locally in your browser. You can also visit settings to
+clear the data. 
+
+## Local Development
 
 ```bash
 pnpm i && pnpm dev
 ```
+
+## Star History
+
+[![Star History Chart](https://api.star-history.com/svg?repos=bytebase/sqlchat&type=Date)](https://star-history.com/#bytebase/sqlchat&Date)
+
+
+## License
+
+This project is under the BSL License. See the [LICENSE](LICENSE) file for the full license text.