Update README.md

Author: 7bitcoder

README.md

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 # Using deep neural networks to recognize hand gestures to control a mobile robot using a camera.
 Desktop aplication written in python 3 using Deep neural networks will calculate commands such as ride forward, turn right and send via wifi to mobile robot. Alro will execute command. </br>
 Arlo: https://www.parallax.com/product/arlo-robotic-platform-system
-[![Audi R8](http://img.youtube.com/vi/KOxbO0EI4MA/0.jpg)](https://www.youtube.com/watch?v=j6qOpACT1z0 "Audi R8")
+[![Audi R8](https://img.youtube.com/vi/j6qOpACT1z0/maxresdefault.jpg)](https://www.youtube.com/watch?v=j6qOpACT1z0 "Presentation")