docs: improve README with badges (#44)

- Add npm version, downloads, license badges
- Add Node.js and TypeScript badges
- Add installation section
- Reorganize links

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: adevinwild

README.md

@@ -11,19 +11,42 @@
   @perseidesjs/auth-otp
 </h1>
 
+<p align="center">
+  <a href="https://www.npmjs.com/package/@perseidesjs/auth-otp"><img src="https://img.shields.io/npm/v/@perseidesjs/auth-otp.svg" alt="npm version"></a>
+  <a href="https://www.npmjs.com/package/@perseidesjs/auth-otp"><img src="https://img.shields.io/npm/dm/@perseidesjs/auth-otp.svg" alt="npm downloads"></a>
+  <a href="https://github.com/perseidesjs/auth-otp/blob/develop/LICENSE.md"><img src="https://img.shields.io/npm/l/@perseidesjs/auth-otp.svg" alt="license"></a>
+  <img src="https://img.shields.io/badge/node-%3E%3D20-brightgreen" alt="node version">
+  <img src="https://img.shields.io/badge/TypeScript-5.x-blue" alt="typescript">
+</p>
+
 <h4 align="center">
   <a href="https://perseides.org">Website</a> |
+  <a href="https://docs.perseides.org/plugins/auth-otp/getting-started">Documentation</a> |
   <a href="https://www.medusajs.com">Medusa</a>
 </h4>
 
 <p align="center">
-  Implement seamlessly OTP-based authentication for Medusa 2.x 
+  Implement seamlessly OTP-based authentication for Medusa 2.x
 </p>
 
 <p align="center">
   <img src="./.github/assets/preview.gif" alt="Preview of @perseidesjs/auth-otp in action">
 </p>
 
+## Installation
+
+```bash
+npm install @perseidesjs/auth-otp
+# or
+yarn add @perseidesjs/auth-otp
+# or
+pnpm add @perseidesjs/auth-otp
+```
+
+## Documentation
+
+Access the full documentation at [docs.perseides.org/plugins/auth-otp](https://docs.perseides.org/plugins/auth-otp/getting-started)
+
+## License
 
-# [Documentation](https://docs.perseides.org/plugins/auth-otp/getting-started)
-Access the documentation for the package, by clicking ["here"](https://docs.perseides.org/plugins/auth-otp/getting-started)
+MIT