If jQuery is not being used in application , than pfDonutPctChart directive having issue with $.extend function 

If jQuery is not being used in application , than in pfDonutPctChart directive having issue with $.extend function , this is jQuery function , and here jquery is not being used , so either  $.extend wherever is used that should be not there. or we should have our own custom javascript extend function , that will merge two object and return in to the first object .
