Examples: require to require_once; PHP 5 to 7 (#38)
Examples: require to require_once; PHP 5 to 7 (#38)

* Examples: require to require_once; PHP 5 to 7

Seems happy on PHP7, though we've implemented the class for PMG not PVE. Updated examples from require to require_once.

* Resolve comments in #38 (CpuID/master)
CpuID/pve2-api-php-client