Updated protobufs to support shipping location

Author: hoffmabc

pb/api.pb.go

@@ -49,6 +49,8 @@ message Listing {
         string cryptoCurrencyCode          = 9 [json_name = "coinType"];
         uint32 cryptoDivisibility          = 10 [json_name = "coinDivisibility"];
         float priceModifier                = 11 [deprecated = true];
+        string sendCountryCode             = 12;
+        string sendPostalCode              = 13;
 
         enum ContractType {
             PHYSICAL_GOOD  = 0;