Apparently the tutorial suggests to download the ndnSIM scenario template, however, this does not look to be compatible with ndnSIM 2.0 (yet).

The mailing list suggests using the ns-3/scratch/ folder (for now), so here is an example of how to use that folder to run your scenario:
\ cd ns-3\ cd scratch\ wget https://raw.githubusercontent.com/named-data/ndnSIM/master/examples/ndn-simple.cpp\ mv ndn-simple.cpp my-ndn-code.cc\ cd ..\ ./waf --run my-ndn-code --vis\