Add Order::DefaultAddress and Client::ClientDetails resources

lib/shopify_api/resources/customer.rb

@@ -1,5 +1,8 @@
 module ShopifyAPI
   class Customer < Base
     include Metafields
+
+    class DefaultAddress < Base
+    end
   end
 end

lib/shopify_api/resources/order.rb

@@ -17,5 +17,8 @@ module ShopifyAPI
     def capture(amount = "")
       Transaction.create(:amount => amount, :kind => "capture", :order_id => id)
     end
+
+    class ClientDetails < Base
+    end
   end
 end