Added check before packaging nuget
Added check before packaging nuget

sadiqhirani/Nancy,sadiqhirani/Nancy,blairconrad/Nancy,damianh/Nancy,danbarua/Nancy,damianh/Nancy,blairconrad/Nancy,blairconrad/Nancy,NancyFx/Nancy,danbarua/Nancy,danbarua/Nancy,NancyFx/Nancy,sadiqhirani/Nancy,NancyFx/Nancy,blairconrad/Nancy,NancyFx/Nancy,danbarua/Nancy,damianh/Nancy,sadiqhirani/Nancy