Code license

[anandtrex]

Please add a code license to indicate if use and modification of this code by other people is allowed. Thank you.

[Debilski]

Hi, the license is the same as for the main repo: https://github.com/ASPP/pelita
As this repo contains just supplementary material for the ASPP school, we didn’t want to clutter the repository with even more files. But we’ll consider adding a note.