Slight improvement to documentation

[kotodharma]

trafficstars

As the engineer who wrote this, I'm sure it all seems obvious to you :) but something that would be VERY helpful to add your website and your github README file would be two bullet lists: "What USBGuard Does", "What USBGuard Doesn't Do". Having this explained clearly would be very helpful even to those of us who are tech-savvy :) Thanks.

[kotodharma]

I want to add the appropriate label to this, but don't know how, or don't have permission.

[dkopecek]

Ok, sounds like a good idea, thanks for feedback!