Add Gemnasium dependency status to README
Add Gemnasium dependency status to README

pedrosmmoreira/clearance,zernie/clearance,thoughtbot/clearance,janusnic/clearance,zernie/clearance,sferik/clearance,pedrosmmoreira/clearance,benlivermore/clearance,zernie/clearance,thoughtbot/clearance,pedrosmmoreira/clearance,naveed-ahmad/clearance,benlivermore/clearance,naveed-ahmad/clearance,thoughtbot/clearance,janusnic/clearance,naveed-ahmad/clearance,benlivermore/clearance,janusnic/clearance