Update OSX README
Update OSX README

adamleff/omnibus,ashhher3/omnibus,szechyjs/omnibus,intfrr/omnibus,jamesn/omnibus,rhass/omnibus,Scalr/omnibus,pskrz/omnibus,higanworks/omnibus,jamesn/omnibus,mattray/omnibus,DataDog/omnibus-ruby,lvfeng1130/omnibus,lvfeng1130/omnibus,higanworks/omnibus,sh9189/omnibus,jamesn/omnibus,adamleff/omnibus,strangelittlemonkey/omnibus,servebox/omnibus,rhass/omnibus,DataDog/omnibus-ruby,szechyjs/omnibus,rapid7/omnibus,sh9189/omnibus,mattray/omnibus,Altiscale/omnibus,lvfeng1130/omnibus,Scalr/omnibus,szechyjs/omnibus,hugosato/omnibus,higanworks/omnibus,sh9189/omnibus,rhass/omnibus,Altiscale/omnibus,Altiscale/omnibus,ashhher3/omnibus,hugosato/omnibus,3ofcoins/chef-omnibus,chef/omnibus,servebox/omnibus,Scalr/omnibus,rapid7/omnibus,intfrr/omnibus,mattray/omnibus,hugosato/omnibus,adamleff/omnibus,strangelittlemonkey/omnibus,3ofcoins/chef-omnibus,pskrz/omnibus,pskrz/omnibus,chef/omnibus,chef/omnibus,rapid7/omnibus,servebox/omnibus,intfrr/omnibus,strangelittlemonkey/omnibus,ashhher3/omnibus,3ofcoins/chef-omnibus,DataDog/omnibus-ruby