解决React Native报错：Navigator is deprecated and has been removed from this package.

报错如下：

        Navigator is deprecated and has been removed from this package. It can now be installed and imported from `react-native-deprecated-custom-components` instead of `react-native`. Learn about alternative navigation solutions at http://facebook.github.io/react-native/docs/navigation.html'

看报错信息应该是RN版本升级把Navigator移除了，我现在版本是0.57.0。

要使用Navigator应该先安装：

npm install react-native-deprecated-custom-components --save

然后在要用的地方导入，即可使用Navigator。

import {Navigator} from 'react-native-deprecated-custom-components';