added create vote specs and updated db annotations
Merge pull request #41 from stevemorris/9a3be7a4806c7231d927a983a037bd9af5f16fce

Added create vote specs and updated db annotations
Linked Location to Hubs, added location_id to Hubs, and renamed Hub.name to Hub.group.
Merge pull request #42 from railsforcharity/Add_Location_to_Hubs

Linked Location to Hubs, added location_id to Hubs, and renamed Hub.name to Hub.group.