封装react-native-image-zoom-viewer

安装依赖

- npm install --save react-native-image-zoom-viewer
- npm install --save react-native-image-browser

使用

```
import {ImageBrowser} from 'react-native-image-browser'
...
render(){
	return (
		...
		<ImageBrowser ref={ref=>this.imgBrowser=ref}/>
		...
	)
}
需要查看大图是: this.imgBrowser.showWithImg(img:IImageInfo[]);
隐藏大图:this.imgBrowser.hide();
```