Preflight Check whether YubiGuard is working #12
Description
In this issue @cjustin88 informs about YubiGuard stopped working on Fedora 26.
This is despite the initial output of YubiGuard indicating it is running.
Therefore it would be desirable to check whether YubiGard can run on a distribution or not and provide the user with the respective output.
Likely this check would include testing whether xinput is installed.