Add image examples to the RTS lighting Guide.

[develroo]

As I have used this myself, I took images of how I set it up with arbitrary tokens as light sources and how I named them associated with the area they light up. If the area it too large for one light, I usually append a suffix like Light-A10a

It is effective and gives the players a good idea of where they have explored and the point they need to go back to if they leave a map and come back to it later.

I hope the images help explain the text better but all feedback is welcome.

[Kruptein]

You should make a PR with just the new changes, right now it also includes all your wall mask stuff.

[develroo]

Yeah not quite sure how to do that without moving it to a different branch. But basically the only changes I made is adding an assets folder and editing the rts mdx file to point to the images.