Add Pixi connect balls game

[toukirkhan]

I have created a connect ball game named "Pixi" using HTML, CSS, Javascript and pixi.js as the name justifies. Basically you have to avoid blue evil balls and connect white good balls to increase your points and continue the game.

[irshadmd]

Please create a demo folder inside "pixi game" and add a working demo of your project named demo.gif

[toukirkhan]

Okay wait

[toukirkhan]

@irshadmd I uploaded the gif file