updated readme and samples

Author: CrineTech

README.md

@@ -348,6 +348,19 @@ var dataSqs = amazonConnection.Notification.CreateDestination(
     });
 ```
 
+### Notifications Create Subscription, For more Notifications sample please check [Here](https://github.com/abuzuhri/Amazon-SP-API-CSharp/blob/main/Source/FikaAmazonAPI.Test/Notifications.cs).
+```CSharp
+
+//SQS
+var result = amazonConnection.Notification.CreateSubscription(
+    new ParameterCreateSubscription()
+    {
+        destinationId = "xxxxxxxxxxxxxxx", // take this from CreateDestination or GetDestinations response 
+        notificationType = NotificationType.ANY_OFFER_CHANGED, // or B2B_ANY_OFFER_CHANGED for B2B prices
+        payloadVersion = "1.0"
+    });
+```
+
 ### Notifications read messages
 ```CSharp
 

Source/FikaAmazonAPI.SampleCode/NotificationsSample.cs

@@ -56,7 +56,19 @@ public void CreateDestination()
                     Sqs = new AmazonSpApiSDK.Models.Notifications.SqsResource("arn:aws:sqs:us-east-2:9999999999999:NAME")
                 }
             });
+        }
+
 
+        public void CreateSubscription()
+        {
+            //SQS
+            var result = amazonConnection.Notification.CreateSubscription(
+                new ParameterCreateSubscription()
+                {
+                    destinationId = "xxxxxxxxxxxxxxx", // take this from CreateDestination or GetDestinations response 
+                    notificationType = NotificationType.ANY_OFFER_CHANGED, // or B2B_ANY_OFFER_CHANGED for B2B prices
+                    payloadVersion = "1.0"
+                });
         }