Replace the cover image

[jestin]

The current cover image is simply a placeholder. It doesn't even show a Commander X16, but rather a TheC64Maxi emulating a VIC-20. Ideally, I'd like a photo similar to the VIC-20's User Guide cover, since that has been so heavily used for inspiration. Now that there is an official case for the X16, I think it would be appropriate to include that in the shot.

[memark2021]

I think the Cover font could be linked to the Vic20 version perhaps? It's like a Goudy Old School, but different. Should be able to find it listed somewhere. I think the horizontal rainbow bands could be half tinted down. The background colour could be better matched to the Vic20 original?. Image updated of course and a placeholder for the "Company" logo details at bottom center.