Opposite to previous demo versions, it does not allow to run simulations
(except to computations of the emission spectrum), but distributive includes
a 'Examples_with_results' folder with pre-computed examples. Also, new demo
version can be used to view all *.sls files (old demo versions work only
with
fixed demo filenames). Now, demo versions of SiLENSe and SpeCLED\RATRO work
similarly
