message: docs(Field): add more demos
diff: @@ -60,16 +60,45 @@ export default {
  ### Disabled
  +```html
  +<van-cell-group>
  + <van-field label="Text" value="Input Readonly" readonly />
  + <van-field label="Text" value="Input Disabled" disabled />
  +</van-cell-group>
  +```
  +
  +### Show Icon
  +
  ```html
  <van-cell-group>
  <van-field
  + v-model="value1"
  + label="Text"
  + left-icon="smile-o"
  + right-icon="warning-o"
  + placeholder="Show Icon"
  + />
  + <van-field
  + v-model="value2"
  + clearable
  label="Text"
  - value="Disabled"
  - disabled
  + left-icon="music-o"
  + placeholder="Show Clear Icon"
  />
  </van-cell-group>
  ```
  +```js
  +export default {
  + data() {
  + return {
  + value1: '',
  + value2: '123'
  + };
  + }
  +};
  +```
  +
  ### Error Info
  Use `error` or `error-message` to show error info
  