README.md in muffin_man-1.5.2 vs README.md in muffin_man-1.5.3

@@ -10,9 +10,10 @@
 - `catalog_items`
 - `reports`
 - `product_fees`
 - `product_pricing`
 - `fulfillment_inbound`
+- `fulfillment_outbound`
 - `feeds`
 - `notifications`
 
 ## Installation