-USPS Shipping Module API test script: usps_check.cgi

Installation:
- The file usps_check.cgi can be used to determine if your server has the required
Perl modules installed. It can be placed in your cgi-bin directory and needs to be
executable (chmod a+x or chmod 755). You can then run it from the web and it will
check that your system is compatible with the script.

