added a Geocoder lib.  renamed flash[address_error} for clarity.
Merge pull request #37 from jjlee5266/refactor_locations_controller

added a Geocoder lib.  renamed flash[address_error} for clarity.
added a delete button to a locations edit page.
Merge pull request #38 from jjlee5266/refactor_locations_controller

added a delete button to a locations edit page.
working validation on address or coordinates.
Merge pull request #40 from jjlee5266/validations

working validation on address or coordinates.
renamed error to login_error.
added a few more tests, cleaned controller.
Merge pull request #41 from jjlee5266/validations

renamed error to login_error.