docs: add note

README.md

@@ -16,9 +16,11 @@
 
 ## Introduction
 
+(**English**/[中文](README.zh-cn.md))
+
 LCDesign (LC's Design) is a UI component framework for building [LCUI](https://github.com/lc-soft/LCUI) application, it provides basic styles for typography and elements, simple layout system, CSS components and utilities. Its CSS code is based [Bootstrap](https://github.com/twbs/bootstrap), so its usage is basically the same as Boostrap.
 
-[中文版说明文档](README.zh-cn.md)
+**Note:** This is not a component library for the web front end, you can't use the web browser to experience the effect, the correct way is to download the source code, then build it, and then run the demo.
 
 ![LC's Design](https://lcui.lc-soft.io/static/images/screenshot-lcui-css.gif)
 
@@ -67,8 +69,8 @@ LCDesign does not have a binary package for Linux, you need to manually download
 
 Building LCDesign has the following dependencies:
 
-- [Xmake](http://xmake.io) - a build tool for compiling C source code
-- [NodeJS](https://nodejs.org) - a JavaScript runtime to run build tools
+- [Xake](http://xmake.io) - a build tool for compiling C source code
+- [NodeJS](https://nodejs.org) - a JavaScript runtime for run build tools
 - [Python](https://www.python.org/) - a environment for run python build tools
 
 After installing them, you need to run the following command to install the other dependencies:

README.zh-cn.md

@@ -16,8 +16,12 @@
 
 ## 介绍
 
+([English](README.md)/**中文**)
+
 LCDesign (LC's Design) 是一个专为 [LCUI](https://github.com/lc-soft/LCUI) 设计的 UI 组件库，它提供了用于文本排版和常用元素的基本样式、简单的布局系统、CSS 组件和实用工具。它的 CSS 代码基于 [Bootstrap](https://github.com/twbs/bootstrap)，其用法和 Bootstrap 大致一样，但需要注意的是，受限于 LCUI 现有特性以及对 CSS 标准的支持程度，并未完全实现 Boostrap 中的功能。
 
+**注意：** 这不是 web 前端组件库，你无法用网络浏览器体验它的效果，正确的做法是下载源代码、构建、然后运行 demo 程序。
+
 ![LC Design](https://lcui.lc-soft.io/static/images/screenshot-lcui-css.gif)
 
 ## 组件