Consider a volunteerism page

[gbinal]

Along the same lines as this - 18F/open-source-program#35

[konklone]

It's a good idea, though I think we need to collect at least a couple of concrete examples before this can go further. We could survey projects for volunteerism opportunities -- for example, team FOIA may have some fun reading room scrapers for people to do. So if that happens, we can re-open this then.