Merge pull request #9 from midwire/feature/3-remove-zipcode-county-relationship

Feature/3 remove zipcode county relationship

Author: midwire

lib/free_zipcode_data/zipcode_table.rb

@@ -10,7 +10,6 @@ def build
           id integer not null primary key,
           code varchar(10) not null,
           state_id integer,
-          county_id integer,
           city varchar(255),
           area_code varchar(3),
           lat float,
@@ -31,14 +30,12 @@ def write(row)
       return nil unless row[:postal_code]
 
       state_id = get_state_id(row[:short_state], row[:state])
-      county_id = get_county_id(row[:county])
       city_name = escape_single_quotes(row[:city])
 
       sql = <<-SQL
-        INSERT INTO zipcodes (code, state_id, county_id, city, lat, lon, accuracy)
+        INSERT INTO zipcodes (code, state_id, city, lat, lon, accuracy)
         VALUES ('#{row[:postal_code]}',
           '#{state_id}',
-          '#{county_id}',
           '#{city_name}',
           '#{row[:latitude]}',
           '#{row[:longitude]}',