update promotion with tax

README.md

@@ -200,6 +200,12 @@ Add Feature for Order and Reservation
 	** '0' means can not use order reservation and '1' means can use order reservation **
 	=> settings/lookups => { type:order_reservation, name: OrderReservation, value:'{0 or 1}' }
 
+For Price 0 in receipt bill
+	2) settings/lookups => { type:show_price, name:Shoe Price, value:1 }
+
+For Price 0 in receipt bill
+	2) settings/lookups => { type:order_by, name:Order By, value:name }
+
 * ToDo list
 
 1. Migration