Create functionalities.md

doc/functionalities.md

@@ -0,0 +1,19 @@
+# Functionalities
+
+---
+
+The plugin integrates Przelewy24 payments with Sylius based applications.
+
+After an installation, user should be able to create new Przelewy24 payment method in the "Payment methods" section in the admin panel.
+
+<div align="center">
+    <img src="./images/przelewy24_methods.png"/>
+</div>
+
+Once there, user can fill out the configuartion form with all the needed info like configuration keys, id, type of the environment, code, name etc..
+
+<div align="center">
+    <img src="./images/przelewy24_create.png"/>
+</div>
+
+After this, created payment method should be visible in the checkout.