Example of a .env.php template, so developers using their own credentials know what's required

.env.template.php

<?php
//Template for all required environment variables
return array(
    'DB_USER'               => '',
    'DB_PASS'               => '',
    'DB_DATABASE'           => '',
    'BUGSNAG_KEY'           => '',
    'NEW_RELIC_APPNAME'     => ''
);