Hi frumious. Sorry that the readme is light in this area. Before loading the data, just start a connection to mongo, and `use geo` `db.ny.ensureIndex({"geo":

Hi frumious. Sorry that the readme is light in this area. Before loading the data, just start a connection to mongo, and `use geo` `db.ny.ensureIndex({"geo": "2dsphere"})`. And you'll have your index.