Update README with 2 screenshots

Author: onmyway133

Images/demo.png

@@ -22,6 +22,11 @@ packed with all the features you expect:
 - [x] Powerful configuration.
 - [x] Demo project.
 
+<div align="center">
+<img src="Images/demo.png" height="500">
+<img src="Images/demo2.png" height="500">
+</div>
+
 ## Table of Contents
 
 * [Usage](#usage)