NODE: Introduction and overview of buttons

[@IrrigardenBologna]

Good ! ! !

[@ingenieria2010]

I like it !!!

[@Zcat1956]

I much dislike the raucous opening music. Folks at neighboring desks want to look over and see what nonsense im playing over and over.. or wonder what site has those rude unhindered autoplay videos. And its just too loud for headphones. Cmon guys, Its sprinkler controllers, not air guitar tryout rave.