API for grabbing images for Computer Vision project

[pisum]

@Star3

the lack of a GET request that will filter by license levels

just to clarify, the discussion actually points to at least on endpoint (https://api.inaturalist.org/v1/docs/#!/Observations/get_observations) that does allow filtering by photo license. the API doesn’t return images themselves, but the URLs for the images are included in the JSON results.