add activerecord-postgis-adapter and rgeo gems
configure db and app for postgis
add awesome_print gem
add  to Ride
add :center to attr_accessible and add rgeo_factory_generator
remove lat and long from Ride
comment out lat / long from seeds
monkey patch rgeo so we get lat, latitude, lon, long, longitude in favor of x and y
include rgeo monkey patch in app rb
add delegations and validations for latitude and longitude on Ride
 - latitude delegates to center (previously aliassed to y)
 - longitude delegates to center (previously aliased to x)
 - latitude validates presence & that it falls between -90 and 90
 - longitude validates presence & that it falls between -180 and 180
 - also update seeds for correct center points
comment rgeo monkey patch
remove unused aliases from rgeo monkey patch
remove latitude and longitude from attr_accessible in Ride
json returned for ride(s) includes latitude and longitude, excludes center
update ride fixtures to set center instead of latitude and longitude
update rides controller test
update ride form to submit center instead of latitude and longitude
update ride feature to fill_in center instead of latitude and longitude