[docs/demos] More examples

[filipdanic]

More examples would be awesome – let your imagination run wild! :)

It would be great if:

• You could create some more interesting or well-designed examples of spicy-datatable.
• You could add react-router and make it possible to navigate between demos in a way that each demo has its own route.

Have a look at App.js to get started! :)

If you need any help, let me know – and if you want to take this issue, leave a comment. 👍