react-router-dom 实现路由左右滑动进入页面的效果

https://github.com/trungdq88/react-router-page-transition#using-with-react-router-4

https://github.com/trungdq88/react-router-page-transition/blob/master/EXAMPLES.md

最重要的是下边这个连接：

https://codesandbox.io/s/n3rrym5y1l