Add a software license to the repository

[dokempf]

The "About" section mentions that the code is license free. I assume that your intent with this statement is to make this peice of software available and usable freely for others. Unfortunately, the absence of a license makes it legally unusable in most jurisdictions, as copyright law is reserving all rights to the author.

If your intent was to make it freely available, please consider adding a permissive license e.g. MIT License or if you want to be as open as possible e.g. the Unlicense

[yblin]

I added a MIT license as you suggested. Thanks!