diff --git a/README.md b/README.md
index f386daf..91662d6 100644
--- a/README.md
+++ b/README.md
@@ -378,7 +378,7 @@ Your client webservice can interact to at least 2 endpoints:
 
 ### POSTMAN JSON
 
-You can download this POSTMAN json file to see how to use the api. [POSTMAN FILE](/example/server/go-payment.postman_collection.json)
+You can download this POSTMAN json file to see how to use the api. [POSTMAN COLLECTION](/example/server/go-payment.postman_collection.json)
 
 ### List of payment methods
 
@@ -459,6 +459,8 @@ POST /payment/invoices
 }
 ```
 
+> To create invoice with `credit_card` payment with/without installment, please take a look [POSTMAN COLLECTION](/example/server/go-payment.postman_collection.json)
+
 #### Response
 
 When you call endpoint above, server returns all invoice data. But, to proceed to the payment page you need to pay attention to `payment` object.