[COOK-1425] - use json output for formulae
[COOK-1425] - use json output for formulae

serfdom/homebrew,cdlm/cookbook-homebrew,Skalv/homebrew,walkah/chef-homebrew,nougad/homebrew,airbnb/homebrew,xdissent/homebrew-cookbook,needle-cookbooks/homebrew,wendorf/homebrew,cookbooks/oc-homebrew,chef-cookbooks/homebrew,ebollens/chef-cookbook-homebrew,errm/chef-homebrew,kennonkwok/homebrew,steigr/chef-homebrew,opscode-cookbooks/homebrew,FieldKey/chef-homebrew,MatthewMaker/homebrew,jeroenj/homebrew-cookbook,sochoa/homebrew,dangmai/homebrew,wantedly/homebrew-cookbook,sergiopatino/homebrew,prezi/chef-homebrew,j-mutter/homebrew-cookbook,Brantone/homebrew