add readme

Author: raphealguo

README.md

@@ -0,0 +1,40 @@
+vConsole-source
+==============================
+[![npm version](https://badge.fury.io/js/vconsole-source.svg)](https://badge.fury.io/js/vconsole-source) 
+
+[vConsole](https://github.com/WechatFE/vConsole "vConsole")的Sources插件，用于查看页面HTML/Javascript/CSS资源源码
+
+
+## 预览图
+
+![](./example/snapshot/qrcode.png)
+
+[http://wechatfe.github.io/vconsole/demo.html](http://wechatfe.github.io/vconsole/demo.html)
+
+![](./example/snapshot/log_panel.png)
+
+
+## 使用
+
+vConsole-sources 遵循vConsole插件接口规范开发，详细规范请点击 [vConsole插件文档](https://github.com/WechatFE/vConsole/blob/dev/doc/plugin_building_a_plugin_CN.md) 查看。
+
+从 [vConsole-sources](https://github.com/WechatFE/vConsole-sources/) 项目下载zip包，或者使用npm安装:
+
+```
+npm install vconsole-sources
+```
+
+导出 `dist/vconsole.min.js` 和 `dist/vconsole-sources.min.js` 到你的项目:
+
+```html
+<script src="path/to/vconsole.min.js"></script>
+<script src="path/to/vconsole-sources.min.js"></script>
+<script>
+console.log('Hello world');
+// 点击右下角vConsole按你即可查看页面资源源码
+</script>
+```
+
+## License
+
+The MIT License (http://opensource.org/licenses/MIT)