Expanded description. Cleaned up read_nuclide_scatter. Added stubs for Brkoxs, Rtflux, Atflux, Rzflux, and Matxs.
Expanded description. Cleaned up read_nuclide_scatter. Added stubs for Brkoxs, Rtflux, Atflux, Rzflux, and Matxs.

pyne/simplesim