Update README.md

Author: app-generator

README.md

@@ -4,6 +4,14 @@ Simple [Flask API Boilerplate](https://appseed.us/boilerplate-code/flask-api-boi
 
 <br />
 
+## [Black Friday](https://appseed.us/discounts/) - `75%OFF`
+
+> The campaign is active until `30.NOV` and applies to all products and licenses.
+
+[![AppSeed - Black Friday 2022 Campaign, 75% OFF Discount (all products).](https://user-images.githubusercontent.com/51070104/201829599-9fe6bdd7-3f19-46f3-9115-962eeb13bf29.jpg)](https://appseed.us/discounts/)
+
+<br />
+
 > Features:
 
 - ✅ `Up-to-date dependencies`