Added contributor info to readme
Added contributor info to readme

SimenB/csslint,scott1028/csslint,codeclimate/csslint,blackberry-webworks/csslint,malept/csslint,lovemeblender/csslint,sergeychernyshev/csslint,YanickNorman/csslint,malept/csslint,Arcanemagus/csslint,scott1028/csslint,codeclimate/csslint,SimenB/csslint,sergeychernyshev/csslint,dmi3y/csslint,krahman/csslint,kmulvey/bootstrap-csslint,dashk/csslint,dashk/csslint,YanickNorman/csslint,Arcanemagus/csslint,lovemeblender/csslint