docs: new readme

README.md

@@ -1,10 +1,18 @@
 # Nexus
 
-An UTxO friendly wallet extension for CKB
-
 ![coverage](https://img.shields.io/codecov/c/github/ckb-js/nexus)
 ![build](https://img.shields.io/github/actions/workflow/status/ckb-js/nexus/test.yaml)
 
+Nexus is a user-friendly UTxO-based wallet extension for Nervos CKB that simplifies the management of CKB assets and transactions.
+
+## Features
+
+- Seamless integration with various Dapps
+- Secure key and password management
+
+## Try it Out
+
+You can download the latest wallet from the GitHub [release](https://github.com/ckb-js/nexus/releases) to try it out, and we've provided a [demo](https://demo-nexus.vercel.app/) preview of the Nexus features
 ## Quick Start
 
 - Node.js 18+
@@ -22,3 +30,12 @@ npm run test
 # drop the "build" folder into the chrome://extensions to start
 npm start
 ```
+
+## Documentation
+
+- [API Reference](https://github.com/ckb-js/nexus/blob/main/docs/rpc.md)
+- [Guide for End Users](https://github.com/ckb-js/nexus/blob/main/docs/user-guide.md)
+- [Guide for Developers](https://github.com/ckb-js/nexus/blob/main/docs/get-started.md)
+- [FAQs](https://github.com/ckb-js/nexus/blob/main/docs/faq.md)
+
+To read more about Nexus, you can also check out the [docs directory](https://github.com/ckb-js/nexus/blob/main/docs).