Say hi to 0.6.0

Hey folks, this is what I believe will be 0.6.0. I'll be testing these changes over the week and will get to release when I'm confident enough that it won't blow up, if I have some time I'll try to get to caching vagrant-omnibus packages as well (ping @tmatilai), let's see....

@eaapa @phinze @scalp42 @tuminoid  Sorry for the spam but you guys are the ones that I believe are interested on this release, so please give it a go and LMK if things are working fine for you ;-)