Create PROMO.md

Author: JusterZhu

PROMO.md

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+Documentation Language: [English](#english) | [简体中文](#简体中文)
+
+---
+
+<div>
+    <div align="left">
+      <h1>GeneralUpdate</h1>
+       <img width="154" height="151" src="./imgs/LOGO白2.png"/>
+    </div>
+[GeneralUpdate](https://github.com/GeneralLibrary/GeneralUpdate) is a cross-platform application auto-upgrade component based on .NET Standard 2.0, released under the Apache 2.0 license. It provides a comprehensive upgrade solution supporting full updates, incremental binary differential updates, and in-place updates across Windows, macOS, and Linux — completely independent of any UI framework. Trusted by dozens of enterprises worldwide, GeneralUpdate eliminates the complexity of building and maintaining custom upgrade pipelines, enabling developers to integrate automatic upgrade capabilities into their applications with a single click.
+</div>
+
+---
+
+<div>
+    <div align="left">
+      <h1>GeneralUpdate</h1>
+       <img width="154" height="151" src="./imgs/LOGO白2.png"/>
+    </div>
+[GeneralUpdate](https://github.com/GeneralLibrary/GeneralUpdate) 是一款基于 .NET Standard 2.0、Apache 2.0 协议开源的跨平台应用程序自动升级组件，提供覆盖 Windows、macOS 和 Linux 的全量更新、增量二进制差分更新和原地更新等完整升级方案，且完全不依赖任何 UI 框架。GeneralUpdate 已被全球数十家企业信赖使用，消除了构建和维护自定义升级管道的复杂性，让开发者能够一键为应用程序集成自动升级能力。
+</div>