added png fig

[jstac]

Added missing png figure to docs folder

[choldgraf]

Hmmm - it looks like the error is because sphinx isn't parsing "scale" properly...I see in the docs there's a space between the number and the % sign. @jstac wanna try adding that in and seeing if the docs build in that case?

so basically, we have:

scale: 80%

and we want

scale: 80 %

Or if that doesn't work, just "80" (that's how it's written in the rst document

[jstac]

Added space. That's a bit fragile, isn't it?

[choldgraf]

that works, thanks!