ResourceSet::Resources display their attributes when coerced into Strings
Change #field_stats to #read for the DataLoader since we just want to read
from the source system and not create any Nyucores
Update pending message to indicate what we're actually waiting on in ActiveFedora 7.0
Remove :test rake task
Change the signature on the rake tasks to take the ResourceSet name and options as a JSON-like string that we can eval into a Ruby Hash
Change the name of the rake task from :field_stats to :read