Added numerous global attributes for metadata. Code changes to output .nc files. Using mjd2iso_date to include a creation date, and an array of time variables (in ISO 8601 format) for output.
New file to output ssi, wavelength grid (center and bands) and tsi to .netcdf4 file. Includes  numerous global attributes for metadata. Code changes to output .nc files. Using mjd2iso_date to include a creation date, and an array of time variables (in ISO 8601 format) for output.
Added function call to writer routine to output tsi to .nc
Ignoring a sunspot blocking test file.