Added configuration for defaults and units in environment.rb.  Added tests for unicode in ip geocoding as well as :include support and overriding default_units.
Added configuration for defaults and units in environment.rb.  Added tests for unicode in ip geocoding as well as :include support and overriding default_units.

git-svn-id: 1c28d5254c2506e18a70911f918dc097e3836272@25 9265c765-0211-4c68-b2df-6d1bd6e20c4d

jasherai/geokit,isaacfeliu/geokit