docs: update copyright information & add MarkXMind promotion

Author: jinzcdev

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 jinzc
+Copyright (c) 2025 Zhichao (@jinzcdev)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -10,6 +10,10 @@
 
 Markmap MCP Server is based on the [Model Context Protocol (MCP)](https://modelcontextprotocol.io/introduction) that allows one-click conversion of Markdown text to interactive mind maps, built on the open source project [markmap](https://github.com/markmap/markmap). The generated mind maps support rich interactive operations and can be exported in various image formats.
 
+> 🎉 **Explore More Mind Mapping Tools**
+>
+> Try [MarkXMind](https://github.com/jinzcdev/markxmind) - An online editor that creates complex mind maps using simple XMindMark syntax. It supports real-time preview, multi-format export (.xmind/.svg/.png), importing existing XMind files. [Try it now](https://markxmind.js.org/)!
+
 ## Features
 
 - 🌠 **Markdown to Mind Map**: Convert Markdown text to interactive mind maps
@@ -20,7 +24,7 @@ Markmap MCP Server is based on the [Model Context Protocol (MCP)](https://modelc
 
 ## Prerequisites
 
-1. Node.js runtime environment
+1. Node.js (v20 or above)
 
 ## Installation
 
@@ -116,4 +120,4 @@ Convert Markdown text into an interactive mind map.
 
 ## License
 
-This project is licensed under the MIT License.
+This project is licensed under the [MIT](./LICENSE) License.

README_zh-CN.md

@@ -10,6 +10,10 @@
 
 Markmap MCP Server 基于 [模型上下文协议 (MCP)](https://modelcontextprotocol.io/introduction)，可将 Markdown 文本一键转换为交互式思维导图，底层采用开源项目 [markmap](https://github.com/markmap/markmap)。生成的思维导图支持丰富的交互操作，并可导出为多种图片格式。
 
+> 🎉 **探索更多思维导图工具**
+>
+> 试试 [MarkXMind](https://github.com/jinzcdev/markxmind) - 一款使用简洁的 XMindMark 语法创建复杂思维导图的在线编辑器。支持实时预览、多格式导出(.xmind/.svg/.png)、导入现有 XMind 文件。[立即体验](https://markxmind.js.org/)！
+
 ## 特性
 
 - 🌠 **Markdown 转思维导图**：将 Markdown 文本转换为交互式思维导图
@@ -20,7 +24,7 @@ Markmap MCP Server 基于 [模型上下文协议 (MCP)](https://modelcontextprot
 
 ## 前提条件
 
-1. Node.js 运行环境
+1. Node.js (v20 或以上)
 
 ## 安装
 
@@ -108,4 +112,4 @@ node build/index.js
 
 ## 许可证
 
-本项目采用 MIT 许可证。
+本项目采用 [MIT](./LICENSE) 许可证。