added dolibarr to enterprise resource planning list

README.md

@@ -1303,6 +1303,7 @@ See also _[Monitoring](#monitoring)_
 
 ### Enterprise Resource Planning
 
+- [Dolibarr](https://www.dolibarr.org/) - Dolibarr ERP CRM is a modern software package to manage your company or foundation activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). ([Demo](https://www.dolibarr.org/onlinedemo.php), [Source Code](https://github.com/Dolibarr/dolibarr)) `GPL-3.0-or-later` `PHP`
 - [ERPNext](https://erpnext.com) - Free open source ERP system. ([Demo](https://demo.erpnext.com), [Source Code](https://github.com/frappe/erpnext)) `GPL-3.0` `Python`
 - [LedgerSMB](https://ledgersmb.org/) - Integrated accounting and ERP system for small and midsize businesses, with double entry accounting, budgeting, invoicing, quotations, projects, orders and inventory management, shipping and more. ([Demo](https://demo.cloud.efficito.com/erp/1.5/login.pl), [Source Code](https://github.com/ledgersmb/LedgerSMB)) `GPL-2.0` `Perl`
 - [Odoo](http://odoo.com) - Free open source ERP system. ([Demo](https://demo.odoo.com/), [Source Code](https://github.com/odoo/odoo)) `LGPL-3.0` `Python`