Replace parameters.ini with config.php
Upgrade app setup, autoloading, and service registration

 * Remove custom autoloading for Facebook API.
 * Revise Twig registration and change default cache location.
 * Document web server setup, configuration options, and cache default.
Fix variable name typo
Workaround fix for FQL query bug

See: https://developers.facebook.com/bugs/581274575217737
Add package and license information