Update README.md

Author: astral-data

README.md

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 - [完整文档-中文](./docs/zh/README.md)
 
 # php-serialize
-An advanced PHP serialization tool leveraging attributes for flexible object-to-array and JSON conversion. Supports property aliases, type conversions, and nested object handling. Ideal for APIs, data persistence, and configuration management.
 
+**php-serialize** is a powerful attribute-based serialization library for PHP (requires **PHP ≥ 8.1**).  
+It allows you to map objects to arrays/JSON and **automatically generate OpenAPI documentation** based on the same attributes.
+
+> 🚀 Unified solution for API data serialization and documentation generation.
+
+## ✨ Features
+
+- 🏷️ Property aliasing with `#[SerializedName]`
+- 🔄 Automatic type casting (e.g. `DateTime ↔ string`)
+- 🔁 Deep object nesting support
+- ❌ Skip/exclude fields with `#[Skip]`
+- 🧩 Recursive DTO serialization
+- 🧬 **Auto-generate OpenAPI schema** using object definitions
+- ⚙️ Framework-agnostic — works with Laravel, Symfony, etc.
 
 ## Quick Start