Just found this doing some binging and didn't seem to find any posts on here related to it. I thought this was pretty neat. I guess the Team behind this got some help from f0f. I had no idea anybody had figured out how to do this. Its pretty cool if you ask me
http://www.ign.com/articles/2013/12/30/wii-u-gamepad-hacked-to-stream-pc-games
http://www.ign.com/articles/2013/12/30/wii-u-gamepad-hacked-to-stream-pc-games