Update README with download info and support request

Added important download information and a request for support.

Author: Refloow

README.md

@@ -17,6 +17,11 @@ The goal of the project is to make professional-looking photo editing accessible
 
 Refloow Photo Studio is free, open source desktop app designed to feel familiar and intuitive for beginners and experienced users alike.
 
+> [!IMPORTANT]
+> Only official download place at the moment is releases tab of this repository: https://github.com/Refloow/Refloow-Photo-Studio/releases
+> 
+> If you find this tool useful leave a ⭐ to support my work (its free) and helps others discover the software
+
 ## Features
 
 | Original | Removed Background |