add gmaps4rails for goecoding purposes
set up geocoding
create seed data from Factories
Merge branch 'seed_data' into google_map

* seed_data:
  create seed data from Factories
move geocoding stuff to parent
merged upstream data
Merge branch 'MailBox_resource' of github.com:YanLi0307/mailbox_finder into google_map

* 'MailBox_resource' of github.com:YanLi0307/mailbox_finder:
  create_mailbox_spec passing after some issues came up
pulled upstream commits
refactor gmaps stuff to get something working
rails generators should create factories, not fixtures
seed data should pull from factories for DRYness
location should have cities