Provides a Geo-Coding functionality using free databases

Changes for 0.33

• Calling new on a local object now returns a clone rather than setting the defaults in the new object Some support for reverse_geocode Added Redis as a prerequisite if REDIS_SERVER is set Latest DB.pm from NJH-Snippets Change the mode of the cachedir to 2755 Free.pm/Local.pm: Try hard to support whatever API that the user wants to use Local.pm: if libpostal fails, try code without Put the README file into the GETTING STARTED section of the POD