wrong desktop environment detected when starting x11 with startx

[sHedC]

Fixes #137

[sHedC]

One sec just noticed something else and infact now XWayland and XOrg are very close so merging.

[sHedC]

Comment here, on the WM check I now that XDG is probably now overkill but as it fixes some issues with other distros and window managers that the second check shoudl also handle.

Shall I risk removing it and sticking to jsut this? Just don't want to risk any breaking for users it currentlly works for.

if [ ! -z $WAYLAND_DISPLAY ]; then
    WINDOW_MANAGER="Wayland"
elif [ ! -z $DISPLAY ]; then
    WINDOW_MANAGER="XOrg"
fi

[netbrain]

lgtm