feat(README): update README

Author: maximehuran

README.md

@@ -1,6 +1,16 @@
+**⚠️ This plugin is depracated for Sylius 2.x version, please [contact us](https://monsieurbiz.com/fr/contact)**
+
 [![Banner of Sylius Advanced Shipping plugin](docs/images/banner.jpg)](https://monsieurbiz.com/agence-web-experte-sylius)
 
-<h1 align="center">Advanced Shipping possibilities for Sylius</h1>
+<h1 align="center">Shipping for Sylius</h1>
+
+Manage pickup point providers : 
+- Mondial Relay
+- DPD Pickup
+- Colis Privé
+- Chronopost Pickup
+
+![Display a list of pickup point by Mondial Relay](docs/images/demo.jpg)
 
 [![Advanced Shipping Plugin license](https://img.shields.io/github/license/monsieurbiz/SyliusAdvancedShippingPlugin?public)](https://github.com/monsieurbiz/SyliusAdvancedShippingPlugin/blob/master/LICENSE.txt)
 [![Tests](https://github.com/monsieurbiz/SyliusAdvancedShippingPlugin/actions/workflows/tests.yaml/badge.svg)](https://github.com/monsieurbiz/SyliusAdvancedShippingPlugin/actions/workflows/tests.yaml)