Set working directory to the script directory - corrected issue with locating supportFiles when script was run as a .command file or otherwise called from outside of the parent directory.
Split off printer name example to be more easily customizable.

Oh, yeah, and lpadmin is located in /usr/sbin, not /usr/bin.
Merge branch 'master' of https://github.com/binkleybloom/Printer_pkginfo_Wizard