Updated the README for Postgres.app
Updated the README for Postgres.app

juliandunn/supermarket,chef/supermarket,robbkidd/supermarket,tas50/supermarket,rafaelmagu/supermarket,leftathome/supermarket,chef/supermarket,robbkidd/supermarket,tas50/supermarket,nellshamrell/supermarket,nellshamrell/supermarket,juliandunn/supermarket,jzohrab/supermarket,jzohrab/supermarket,leftathome/supermarket,juliandunn/supermarket,rafaelmagu/supermarket,robbkidd/supermarket,dpnl87/supermarket,rafaelmagu/supermarket,leftathome/supermarket,dpnl87/supermarket,leftathome/supermarket,dpnl87/supermarket,chef/supermarket,jzohrab/supermarket,robbkidd/supermarket,rafaelmagu/supermarket,chef/supermarket,chef/supermarket,juliandunn/supermarket,dpnl87/supermarket,nellshamrell/supermarket,jzohrab/supermarket,nellshamrell/supermarket,tas50/supermarket,tas50/supermarket