Hm right I did it in two steps, because I did the first step and then thought it was pretty unclean to have
1) LocalesResourcesImporter have this one static method, and have a spec file that tests only that one method
2) TwitterCldr::Shared::Territories.normalize_territory_code() be public

So I like it better this way, but I'm happy to revert the last commit if you still think it is better in that state. Thanks!