Expand Available Licenses

[sinabahram]

While there are tons of CC licenses, some of the more popular defaults from CreativeCommons.org are not available when creating an organization. What's the easiest way to get those into Coyote? Maybe a JSON export from CC or other services of all the licenses? Maybe this exists already as a gem? If we got rid of that to simplify things, that's fine, but then @flipsasser can you and I compose a top-5 or so list that should be available? Open to other ideas on this one.