[interchange] * Add documentation of additional approval numbers.

[Mike Heins]

commit 3a8884ba2d4c0daea1112c1302b70eaa7f59397d
Author: Mike Heins <mike at perusion.com>
Date:   Wed Sep 16 10:12:25 2015 -0400

    * Add documentation of additional approval numbers.

 lib/Vend/Payment/TestPayment.pm |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/lib/Vend/Payment/TestPayment.pm b/lib/Vend/Payment/TestPayment.pm
index c469acf..3dbef37 100644
--- a/lib/Vend/Payment/TestPayment.pm
+++ b/lib/Vend/Payment/TestPayment.pm
@@ -56,7 +56,9 @@ The module will perform one of three actions:
 
 =item *
 
-If the card number is 4111111111111111 then the transaction will be approved.
+If the card number is 4111111111111111 then the transaction will be approved. 
+Additional approval numbers include 6011333333333333 (discover), 5454545454545454
+(mc), 341111111111111 (amex).
 
 =item *