Fix ark resource

i can't figure out how to make the recipe work as is with the ark cookkbooks at 0.2.2, 0.2.4, or 0.3.0. and i can't find 0.2.3.
'file' does not appear to be a declared attribute parameter, though 'creates' does.
this patch updates the recipe to use the 'creates' attribute instead of the 'file' one.