### CountDown 样例

```js
const targetTime = new Date().getTime() + 3900000;

<CountDown style={{ fontSize: 20 }} target={targetTime} />
```

### 安装方式
```js static
    import { CountDown } from 'abc-generals'

    ...
    const targetTime = new Date().getTime() + 3900000;

    <CountDown style={{ fontSize: 20 }} target={targetTime} />
    ...
```

## API

|参数|说明|类型|默认值|
|:--|:--|:--:|:--:|
|format|时间格式化显示|`Function(time)`||
|target|目标时间|`Date`|`-`|
|onEnd|倒计时结束回调|`function`|`-`|