bugfix to work on ubuntu

Hello,
thank you for your great work!
I've done some changes to run the script under ubuntu.
In the config.rules file I changed the path of the script to be same of  the install script.
In the build.sh file I needed to change the line in this way otherwise Ubuntu doesn't recognize the usb libraries, I don't know if the problem exists on other distros.
Best regards,

Mike

P.s. This is the first pull request of my life :)