Remove Google Premier-specific configuration.

Instead use an array for key, client, and channel.

lib/geocoder/configuration.rb

@@ -22,14 +22,9 @@ module Geocoder
         [:https_proxy, nil],
 
         # API key for geocoding service
+        # for Google Premier use a 3-element array: [key, client, channel]
         [:api_key, nil],
 
-        # API client for geocoding service
-        [:api_client, nil],
-
-        # API channel for geocoding service
-        [:api_channel, nil],
-
         # cache object (must respond to #[], #[]=, and #keys)
         [:cache, nil],
 

lib/geocoder/lookups/google_premier.rb

@@ -13,15 +13,15 @@ module Geocoder::Lookup
         (reverse ? :latlng : :address) => query,
         :sensor => 'false',
         :language => Geocoder::Configuration.language,
-        :client => Geocoder::Configuration.api_client,
-        :channel => Geocoder::Configuration.api_channel
+        :client => Geocoder::Configuration.api_key[1],
+        :channel => Geocoder::Configuration.api_key[2]
       }.reject{ |key, value| value.nil? }
       path = "/maps/api/geocode/json?#{hash_to_query(params)}"
       "#{protocol}://maps.googleapis.com#{path}&signature=#{sign(path)}"
     end
 
     def sign(string)
-      raw_private_key = url_safe_base64_decode(Geocoder::Configuration.api_key)
+      raw_private_key = url_safe_base64_decode(Geocoder::Configuration.api_key[0])
       digest = OpenSSL::Digest::Digest.new('sha1')
       raw_signature = OpenSSL::HMAC.digest(digest, raw_private_key, string)
       url_safe_base64_encode(raw_signature)

test/services_test.rb

@@ -43,9 +43,7 @@ class ServicesTest < Test::Unit::TestCase
   end
 
   def test_google_premier_query_url
-    Geocoder::Configuration.api_key = "deadbeef"
-    Geocoder::Configuration.api_client = "gme-test"
-    Geocoder::Configuration.api_channel = "test-dev"
+    Geocoder::Configuration.api_key = ["deadbeef", "gme-test", "test-dev"]
     assert_equal "http://maps.googleapis.com/maps/api/geocode/json?address=Madison+Square+Garden%2C+New+York%2C+NY&channel=test-dev&client=gme-test&language=en&sensor=false&signature=doJvJqX7YJzgV9rJ0DnVkTGZqTg=",
       Geocoder::Lookup::GooglePremier.new.send(:query_url, "Madison Square Garden, New York, NY", false)
   end