Screenshots

[Lenni-builder]

It would be useful to have screenshots of all themes so you can preview them and don't have to download them first.

[DioEgizio]

There's a screenshot in every theme in their folder

[Lenni-builder]

Thanks! It might still be a good idea to inform people about this in the README.

[JavierLianoRioz]

Thanks! It might still be a good idea to inform people about this in the README.

It would also be good to have the same images in a full list instead of going through folders one by one looking for a specific one.