Add geocoding
Add SA Boundary Shapefile
Merge branch 'master' of github.com:codeforamerica/homebase into check-address
add shapefile
Revert "add shapefile"

This reverts commit 6bc98bbfd149daa39bdc7c29b582e41432508f1a.
enable postgis, require removal of schema and drop of database
Add PostGIS adapter
Add Cosa Boundary Table
Add Rake task to parse COSA Boundary Shapefile
Add logic to check if address is in COSA
Add validation when address is empty
add address validator