Updated gemspec
Updated gemspec

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