[discident-glib] ean: Add link to Product Advertising API docs

[Bastien Nocera <hadess src gnome org>]

commit 809ed5a0ca5db8aefa5518a920a3a2751ca793dc
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Dec 21 17:46:45 2015 +0100

    ean: Add link to Product Advertising API docs

 discident-glib/discident-ean-amz-glib.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/discident-glib/discident-ean-amz-glib.c b/discident-glib/discident-ean-amz-glib.c
index be95af2..0467b2d 100644
--- a/discident-glib/discident-ean-amz-glib.c
+++ b/discident-glib/discident-ean-amz-glib.c
@@ -33,6 +33,9 @@
 #include "discident-ean-amz-glib.h"
 #include "discident-error.h"
 
+/* Full documentation at:
+ * http://docs.aws.amazon.com/AWSECommerceService/latest/DG/ProgrammingGuide.html */
+
 #define RESPONSE_NAMESPACE "http://webservices.amazon.com/AWSECommerceService/2011-08-01";
 
 #define SEARCH_URL "https://webservices.amazon.%s/onca/xml?";