Initial release

First release!
The program is able to generate CD, 11 digit CD (Office) and OEM keys using the mod7 algorithm.
It also contains a --check command that allows you to verify any key to see whether it's valid.

This release contains a Windows as well as a Linux build.

Full Changelog: https://github.com/Tresquel/mod7-keygen/commits/1.0.0