[GAMEPLAY] Kha'zix jumping over the map

I've played a game against Kha'zix today and he was able to jump from his base to your top inhibitor and also to jump back to his base when my team tried to kill him. He has done this many times during the game only to kill our top and mid minions in our base to help his team push.He was also talking with us about it, so he definitely knew ho to do it and it wasn't just some accident. After the game when i searched the player i found out he plays only kha'zix, so he probably do it every game. His in-game nick is Miętoszę on EUW. I also have a record of the match, but only in my LOLReplay.

Edit: I laso found a video about it on youtube: https://www.youtube.com/watch?v=cYD2sG2xiEY