Changed the instructions to point to src/Constants.php...
Changed the instructions to point to src/Constants.php...

Instead of pointing to app/Constants.php
OfficeDev/O365-PHP-Unified-API-Connect,OfficeDev/O365-PHP-Microsoft-Graph-Connect,OfficeDev/O365-PHP-Unified-API-Connect,OfficeDev/O365-PHP-Microsoft-Graph-Connect