[UPD] addons table in README.md

README.md

@@ -37,6 +37,7 @@ addon | version | summary
 [pos_quick_logout](pos_quick_logout/) | 10.0.1.0.0 | Allow PoS user to logout quickly after user changed
 [pos_remove_pos_category](pos_remove_pos_category/) | 10.0.2.0.0 | POS Remove POS Category
 [pos_report_session_summary](pos_report_session_summary/) | 10.0.1.0.0 | Adds a Session Summary PDF report on the POS session
+[pos_sequence_ref_number](pos_sequence_ref_number/) | 10.0.1.0.0 | Sequential Order numbers for Point of sale
 [pos_session_pay_invoice](pos_session_pay_invoice/) | 10.0.1.0.0 | Pay and receive invoices from PoS Session
 [pos_stock_picking_invoice_link](pos_stock_picking_invoice_link/) | 10.0.1.0.0 | POS Stock Picking Invoice Link
 [pos_timeout](pos_timeout/) | 10.0.1.0.0 | Set the timeout of the point of sale