settings.php: Adding reference to settings.local.php

 1/**
 2 * Load local development override configuration, if available.
 3 *
 4 * Use settings.local.php to override variables on secondary (staging,
 5 * development, etc) installations of this site. Typically used to disable
 6 * caching, JavaScript/CSS compression, re-routing of outgoing emails, and
 7 * other things that should not happen on development and testing sites.
 8 *
 9 * Keep this code block at the end of this file to take full effect.
10 */
11if (file_exists(__DIR__ . '/settings.local.php')) {
12  include __DIR__ . '/settings.local.php';
13}