More features to add

I was showing off the pie viewer prototype to Norm, and he had some great suggestions for features.

A black/white/grayscale option. Many journals prefer black and white figures, so it'd be great to be able to color pies with grayscale and maybe patterns.

Be able to save as an Illustrator or other vector based document. I'm creating all these svg's, so allowing output to be read by an svg master manipulator seems smart.