OP-407 - functionalities.md has been updated

.github/workflows/build.yml

@@ -31,7 +31,7 @@ jobs:
       DATABASE_URL: "mysql://root:[email protected]/sylius?serverVersion=${{ matrix.mysql }}"
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -42,7 +42,7 @@ jobs:
           coverage: none
 
       - name: Setup Node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
         with:
           node-version: "${{ matrix.node }}"
 
@@ -137,7 +137,7 @@ jobs:
         run: vendor/bin/behat --colors --strict -vvv --no-interaction || vendor/bin/behat --colors --strict -vvv --no-interaction --rerun
 
       - name: Upload Behat logs
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         if: failure()
         with:
           name: Behat logs

doc/functionalities.md

@@ -4,6 +4,9 @@
 
 The plugin integrates Przelewy24 payments with Sylius based applications.
 
+>Przelewy24 is a popular online payment system in Poland that enables fast and secure transfers and payments for online purchases.
+> The system integrates a number of different payment methods to suit the preferences of both customers and merchants.
+
 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">
@@ -17,3 +20,7 @@ Once there, user can fill out the configuartion form with all the needed info li
 </div>
 
 After this, created payment method should be visible in the checkout.
+
+<div align="center">
+    <img src="./images/przelewy24_payment.png"/>
+</div>