removed reference to window in getPhotoDriver to allow for SSR

[Dieff]

Addresses #91 A small change to the getPhotoDriver method should allow the react components to initially render on a Node server, so this library can be used with NextJS or similar server rendering libraries.

[garethdsouza]

Can someone please merge this. I really need this working with next.js!

[panghaoyuan]

Can someone please merge this. I need this working with next.js!

[Nicolas-Menettrier]

If someone is still struggling with this problem (hello next.js user), you can use this :

import dynamic from 'next/dynamic';

// @ts-ignore
const DynamicFileViewer = dynamic(() => import('react-file-viewer'), {
  ssr: false,
});

This will disable ssr for this module