updated readme with find_all_by_[column]
updated readme with find_all_by_[column]

Signed-off-by: Pete Deffendol <e3b6cda228242c30b711ac17cb264f1dbadfd0b6@mdsc.com>
smedrick/spatial_adapter,jsack777/spatial_adapter,juniorz/spatial_adapter,hashbangnz/spatial_adapter,darbyfrey/spatial_adapter,bellycard/spatial_adapter,pdeffendol/spatial_adapter,julianray/spatial_adapter