docs: update readme

CONTRIBUTING.md

@@ -0,0 +1,27 @@
+# Development
+
+## init
+
+```
+
+pnpm bootstrap
+
+```
+
+## dev & doc
+
+```
+
+pnpm run docs
+
+```
+
+## release
+
+```
+
+pnpm changeset
+pnpm changeset version
+pnpm changeset publish
+
+```

README.md

@@ -1,23 +1,29 @@
 # libro
 
+[![Code: CI](https://github.com/difizen/libro/actions/workflows/ci.yml/badge.svg)](https://github.com/difizen/libro/actions/workflows/ci.yml)
 [![codecov](https://codecov.io/gh/difizen/libro/graph/badge.svg?token=8LWLNZK78Z)](https://codecov.io/gh/difizen/libro)
 
-# init
+一个 notebook 编辑器和产品前端解决方案。
 
-```
-pnpm bootstrap
-```
+- 方便自定义扩展和二次开发
+- 基于 react 易于集成
+- 兼容原生 ipynb 文件
 
-# dev & doc
+![image](https://mdn.alipayobjects.com/huamei_hdnzbp/afts/img/A*x8k3TbwOJqoAAAAAAAAAAAAADjOxAQ/original)
 
-```
-pnpm run docs
-```
+## 模块
 
-# release
+- [内核](./packages/libro-core/README.md)
+- [kernel](./packages/libro-kernel/README.md)
+- [markdown cell](./packages/libro-codemirror-markdown-cell/README.md)
+- [code cell](./packages/libro-codemirror-code-cell/README.md)
+- [raw cell](./packages/libro-codemirror-raw-cell/README.md)
+- [输出](./packages/libro-output/README.md)
+- [mime 渲染](./packages/libro-rendermime/README.md)
+- [大纲](./packages/libro-toc/README.md)
+- [全文搜索](./packages/libro-search/README.md)
+- [本地化](./packages/libro-l10n/README.md)
 
-```
-pnpm changeset
-pnpm changeset version
-pnpm changeset publish
-```
+## 贡献代码
+
+请查阅 [CONTRIBUTING.md](./CONTRIBUTING.md)