README.md in muffin_man-0.1.2 vs README.md in muffin_man-0.1.3

@@ -34,10 +34,10 @@
   aws_secret_access_key: AWS_SECRET_ACCESS_KEY,
   region: REGION, # This can be one of ['na', 'eu', 'fe'] and defaults to 'na'
   sts_iam_role_arn: STS_IAM_ROLE_ARN, # Optional
 }
 client = MuffinMan::Solicitations.new(credentials)
-response = client.create_product_review_and_seller_feedback_solicitation(amazon_order_id, marketplace_ids, region)
+response = client.create_product_review_and_seller_feedback_solicitation(amazon_order_id, marketplace_ids)
 JSON.parse(response.body)
 ```
 
 You can optionally use Amazon's sandbox environment by specifying `client = MuffinMan::Solicitations.new(credentials, sandbox = true)`