fixing link in readme
fixing link in readme

mattbrictson/cancan,xbits/cancan,GeorgeZhukov/cancancan,ryanb/cancan,sideci-sample/sideci-sample-cancan,gdpelican/cancancan,moss-zc/cancan,CanCanCommunity/cancancan,docount/cancan,jackquack/cancan,phallguy/cancancan,0612800232/cancan,StartupWeekend/cancan,nerde/cancancan,coorasse/cancancan,hunterae/cancan,chadzilla2080/cancan,jhawthorn/cancancan,ReaxDev/cancancan,chadzilla2080/cancancan,travis-repos/cancan,VoroninNick/cancan,dima4p/cancancan,roaaangel/cancancan,chenxin0723/cancancan,mccraigmccraig/cancan,Ahnita/cancancan,adamliesko/cancancan,NelsonScott/cancancan,MetricMike/cancancan,macmartine/cancancan-ruby,neomadara/cancancan,uversity/cancan,antonifs/cancan,mv288/cancan,greenriver/cancan,dgynn/cancancan,tiarly/cancancan