README.md: Add screenshots section to README.md

Author: adamff-dev

README.md

@@ -2,6 +2,15 @@
 
 Call Blocker App is a Kotlin-based application designed to help you manage and block unwanted incoming calls while maintaining a whitelist of approved contacts. It uses web scraping to enhance the call-blocking experience by integrating real-time data from popular spam-detection Spanish websites.
 
+## Screenshots
+
+Here are some screenshots of the Call Blocker App in action:
+
+<img src="https://i.imgur.com/YwmFXBh.jpeg" alt="Main screen" width="300">  
+<img src="https://i.imgur.com/2ezJn7k.jpeg" alt="Phone number options" width="300">  
+<img src="https://i.imgur.com/hvniKjX.jpeg" alt="Settings" width="300">  
+<img src="https://i.imgur.com/tWkV5Vk.jpeg" alt="More settings" width="300">
+
 ## Features
 
 - **Block and Unblock Numbers**: Easily block or unblock specific phone numbers.