Added tmbroadave.f90

This program will not shift or normalize the area of the average.
This is ideal for comparing individual spectra to the total average
Added a PBE XES Prelimnary script a submit script

Please note that this is a work in progress. There needs to be much work
on the PBE-submit.sh. AS oh right now it will on run AFTER a GW run has
been completed.
XES PBE Script

This is the start of the work on the full XES PBE Script