Add Jim Turner's Guide for additional keys
Remove HTML (since it is build file)
Add KDE script drawer guide
Add support for X230 bezel buttons (fixes #21)
Delete think-keycodes.desktop
Make grep search /sys/class/net/e*/carrier quietly

Without this, grep writes `1` to stdout if it finds a match.
Merge branch 'master' into udev-keycodes
Merge remote-tracking branch 'jturner314/keycodes-desktop' into udev-keycodes
Merge remote-tracking branch 'jturner314/X230T-buttons' into udev-keycodes