Removed CellData

Removed references to the cell data, only using infhommedium cross
sections per the sugestion of Dr. Miller.
Working RPM8 simulation in SAS

A working RPM8 simulation in SAS, getting the flux factors (which look
to be a little low). I think for the interaction rate I can just give it
a non-standard flux to dose rate mt number...
Working Input Generator and Input Deck

Having a working input deck, as well as a python script to generate that
input deck.