sifReader - Read Andor Newton .sif files into matlab.

Andor has a proprietary sif file format that they change with every
new version of their Solis software. This package is based on the
work of Marcel Leutenegger, file ID <a href="http://www.mathworks.com/matlabcentral/fileexchange/11224-andor-sif-image-reader">#11224</a>.
We had to modify his code to be able to read in sif files generated
with our setup (Andor Newton EMCCD + Solis 4.16).

This package also contains an important adjustment to Leutenagger's.
We found that the wavelength axis is not given by a simple scaling,
there are some non-linear corrections saved in the .sif file. These
non-linear corrections are incorporated into sifreadnk.

This package has been tested extensively using an Andor Newton CCD
camera. The spectra are taken on full vertical binning (FVB) mode.
They are saved as sif's using Andor's Solis software. This toolbox
can also import kinetic series.

sifreadnk contains all the code that imports the sif file. sifPlot
plots these structures with a variety of options.