videojs warning: videojs.plugin() is deprecated

[kfarr]

VIDEOJS: WARN: videojs.plugin() is deprecated; use videojs.registerPlugin() instead

check out the console on this page:
https://videojsvr-error1.glitch.me/

[jbroberg]

This is a VJS 6 change right? I have updated to latest 5.X release and don't see it.

When we move to VJS 6 I will update the function singature.