More efficient script for debugging and more friendly output

[lovelock]

1. check if xremap binary exists then download new archive
2. check if gnome-extension is loaded and give a proper output instead of the red warning (At first it made believe there were something wrong when I saw the red blocks)
3. run systemctl status to ensure the service is on
4. fix a typo in README.md

[lovelock]

Please ignore the force push...
Your project is the best solution for Wayland linux user who is also very much used to using macOS, thanks.
But I wonder if there is some method to completely emulate macOS layout instead of configuring for specific app.