Update readme.md

Author: Gauff

readme.md

@@ -6,6 +6,8 @@ The ideas:
 - Maximize panel size
 - Tap the screen to see the next panel!
 
+![screenshot](https://github.com/Gauff/ComicStripToKindle/blob/master/screenshot.png)
+
 This tool processes PDF comic files by: 
 - Extracting individual panels
 - Adjusting the panels according to your e-reader screen size
@@ -45,4 +47,4 @@ I share it as it was.
 
 ## License
 
-This project is licensed under the MIT License.
+This project is licensed under the MIT License.