File instlux-README.BUILD of Package instlux

To get the latest instlux build,
see OBS project home:belphegor_belbel:instlux
at https://build.opensuse.org/project/show?project=home%3Abelphegor_belbel%3Ainstlux
and github repository
at https://github.com/belphegor-belbel/instlux.

Source codes and compile procedures (.spec) cannot be included
because there are some licensing doubts
(see https://en.opensuse.org/SDB:Instlux for more information).