Changed the way model templates are saved. They are now ms files
Moved flatten_spectra from ADESALT to stellarFit
Added runtest(), a test of a full reduction script.
Added mostly done contiuum binning function to ADESALT

This function will bin until a S/N threshold is reached _in the
continuum_. This should allow for good template fitting. The details of
exactly how the S/N is computed still need to be thought out.