require an apikey to make any request
be safe; order json specifically
properly parse the list of items in the response
pass a fake apikey in tests
properly handle nested data structures from live api; update tests
handle 404s and non-json response bodies
add /collections endpoint
add /geographies endpoint
add /exhibition endpoint
better description
add /locations endpoint
`find` is only available on ArtObject
add the nested /objects request to all the ruby objects
update what needs to be done