https://github.com/kittykatattack/learningPixi#introduction not displaying any result at the beginning

[kowalsk]

I am following this:
https://github.com/kittykatattack/learningPixi#introduction

Section: Installing Pixi
It says I should see PixiJS 4.4.5 - * canvas * http://www.pixijs.com/ ♥♥♥
However nothing shows up