-Changed the url of vrpn to download a zip file from unc's ftp instead of pulling from unc's git repo.
-Unc's git repo is now on the formula's head
-Changed version number
-Added libusb (change from rpavlik to support HID)
-Added --docs argument (change from rpavlik to build documentation)
Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>
