Platform independent release

Windows, Linux, Mac

Install at least a Java 1.8 Runtime and start the HitKlack.jar (java -jar HitKlack.jar).
Windows users simply duple-click the HitKlack.exe (Which sill needs the HitKlack.jar)

Android

Copy the HitKlack.apk to your phone and install it with a file explorer.
If you have enabled developer options you can install it via console with adb install HitKlack.apk.