Deprecate old distance_to/from argument format.

lib/geocoder/orms/base.rb

@@ -28,6 +28,9 @@ module Geocoder
       # Also takes a symbol specifying the units (:mi or :km; default is :mi).
       #
       def distance_to(point, *args)
+        if point.is_a?(Numeric) and args[0].is_a?(Numeric)
+          warn "DEPRECATION WARNING: Instead of passing latitude/longitude as separate arguments to the distance_to/from method, please pass an array [#{point},#{args[0]}], a geocoded object, or a geocodable address (string). The old argument format will not be supported in Geocoder v.1.0."
+        end
         return nil unless geocoded?
         units = args.last.is_a?(Symbol) ? args.pop : :mi
         them = args.size > 0 ? [point, args.first] :

test/geocoder_test.rb

@@ -34,13 +34,13 @@ class GeocoderTest < Test::Unit::TestCase
   def test_distance_to_returns_float
     v = Venue.new(*venue_params(:msg))
     v.latitude, v.longitude = [40.750354, -73.993371]
-    assert (d = v.distance_to(30, -94)).is_a?(Float)
+    assert (d = v.distance_to([30, -94])).is_a?(Float)
   end
 
   def test_distance_from_is_alias_for_distance_to
     v = Venue.new(*venue_params(:msg))
     v.latitude, v.longitude = [40.750354, -73.993371]
-    assert_equal v.distance_from(30, -94), v.distance_to(30, -94)
+    assert_equal v.distance_from([30, -94]), v.distance_to([30, -94])
   end
 
   def test_coordinates_method