Add YAML support

[muhang]

Add YAML support.

[TheMachoManRandySavage]

Oh yeah! No one does it better than @muhang! @muhang does it better than anyone, yeah! Yeah! On balance, off balance, doesn't matter. He's better than you are, yeah and I'm talking everyone in the World Wrestling Federation. And I'm even talking to President Jack Tunney, yeah. @muhang is on his way to the top and nothing is gonna stop him. Nothing's gonna stop him. Yeah. Cream of the crop!

[TheMachoManRandySavage]

I'm the tower of power, too sweet to be sour, funky like a monkey. The sky's the limit, and space is the place, and NO MAN ASSIGNS THE MACHO MAN SUPPORT TICKETS, @bww!