README.md in muffin_man-2.1.3 vs README.md in muffin_man-2.2.1

@@ -6,9 +6,10 @@
 
 As of now, this gem only supports portions of the following APIs with more to come:
 
 - `create_product_review_and_seller_feedback_solicitation`
 - `catalog_items`
+- `data_kiosk`
 - `reports`
 - `product_fees`
 - `product_pricing`
 - `fulfillment_inbound`
 - `fulfillment_outbound`