class Geocoder::Lookup::Base

subclss this method, they must also subclass #cache_key.
base_query_url and url_query_string. If absolutely necessary to
Subclasses should not modify this method. Instead they should define

URL to use for querying the geocoding engine.
#

def query_url(query)
  base_query_url(query) + url_query_string(query)
end