Update README.md

Author: davnag

README.md

@@ -2,7 +2,7 @@
 
 DJSemiModalViewController is a semi modal presentation dialog that grows with it´s added content. DJSemiModalViewController works for iPhone and iPad. DJSemiModalViewController mimic the design of the default NFC popup dialog.
 
-<img src="https://raw.githubusercontent.com/davnag/DJSemiModalViewController/master/screenshots_1.png" width="320">
+<img src="https://raw.githubusercontent.com/davnag/DJSemiModalViewController/master/Screencast_1.gif" width="320">
 
 ## Example