removed sandbox path (was an error of mine to add)
removed sandbox path (was an error of mine to add)

This was because a volunteer had a *previous* sandbox and didn't wipe
that out, so things installed in a sandbox (I think), anyway, reverting
to Singpolyma's original instructions.

snowdriftcoop/snowdrift,chreekat/snowdrift,chreekat/snowdrift,akegalj/snowdrift,akegalj/snowdrift