Merge pull request #609 from maxmind/wstorey/docs

Add more fields to README examples

Author: horgh

README.md

@@ -174,6 +174,7 @@ Transaction request = new Transaction.Builder(
             .cvvResult('Y')
             .issuerIdNumber("213312")
             .lastDigits("3211")
+            .token("valid_token")
             .was3dSecureSuccessful(true)
             .build()
     ).email(
@@ -197,6 +198,8 @@ Transaction request = new Transaction.Builder(
             .discountCode("10OFF")
             .referrerUri(new URI("https://www.google.com/"))
             .subaffiliateId("saf9")
+            .isGift(true)
+            .hasGiftMessage(true)
             .build()
     ).payment(
         new Payment.Builder()