Add #homepage Package DSL method
Add #homepage Package DSL method

Now non-Opscode users can create packages with their own homepage metadata.

Conflicts:
	lib/omnibus/project.rb

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