add readme

Author: ianho

README.md

@@ -1,3 +1,56 @@
 # xing-weapp-editor
 
 > 开箱即用的小程序图文编辑组件
+
+## 组件属性
+
+属性名|类型|默认值|说明
+---|---|---|---
+image-upload-url|String|无|图片上传，必填，参考[wx.uploadFile](https://developers.weixin.qq.com/miniprogram/dev/api/network-file.html#wxuploadfileobject)
+image-upload-name|String|无|图片上传，必填，参考[wx.uploadFile](https://developers.weixin.qq.com/miniprogram/dev/api/network-file.html#wxuploadfileobject)
+image-upload-header|String|无|图片上传，参考[wx.uploadFile](https://developers.weixin.qq.com/miniprogram/dev/api/network-file.html#wxuploadfileobject)
+image-upload-form-data|Object|无|图片上传，参考[wx.uploadFile](https://developers.weixin.qq.com/miniprogram/dev/api/network-file.html#wxuploadfileobject)
+image-upload-key-chain|String|无|图片上传接口返回值中url字段的路径，如返回为`{ image : { url: 'http://xxx.jpg' } }`，则填`image.url`
+output-type|String|html|输出的格式，`html`或`array`，参考[rich-text](https://developers.weixin.qq.com/miniprogram/dev/component/rich-text.html)
+button-background-color|String|#409EFF|完成按钮的背景色
+button-text-color|String|#fff|完成按钮的前景色
+nodes|Array|无|初始内容的array形式，仅支持此组件输出的array，优先于HTML
+html|String|无|初始内容的HTML形式，仅支持此组件输出的HTML
+bindfinish|EventHandle|无|输出内容时触发，`event.detail = { content }`
+
+## 代码示例
+
+```xml
+<!-- index.wxml -->
+<xing-editor
+  bindfinish="finish"
+  output-type="html"
+  image-upload-url="http://localhost:3000/upload"
+  image-upload-name="image"
+  image-upload-key-chain="image.url"
+  html="{{html}}"/>
+```
+
+```javascript
+//index.js
+Page({
+  data: {
+    html: '<p class="xing-p">123124<br><br>123124123<br><br><br>324123</p>' +
+    '<img class="xing-img" style="width: 100%" src="http://localhost:3000/static/73e95bd90f005.png" _height="0.5743348982785602" _uploaded="true"></img>' +
+    '<p class="xing-p">333</p>' + 
+    '<img class="xing-img" style="width: 100%" src="http://localhost:3000/static/2dab4bd82f879.png" _height="1.2095588235294117" _uploaded="true"></img>',
+  },
+
+  finish: function (e) {
+    console.log(e.detail.content);
+  },
+})
+```
+
+```javascript
+{
+  "usingComponents": {
+    "xing-editor": "/components/xing-editor"
+  }
+}
+```