Fixed strict type in PHP file

[matt-usurp]

I made these changes to my local vendor manually and this does not fix the issue.

The change needs to happen in here too as mentioned in the issue #30.

https://github.com/mmoreram/php-formatter/blob/v1.3.1/src/PHPFormatter/Console/Application.php#L34-L37

if (function_exists('ini_set') && extension_loaded('xdebug')) {
    ini_set('xdebug.show_exception_trace', false);
    ini_set('xdebug.scream', false);
}

[mmoreram]

Hum, I don't have xdebug installed. True :(

[mmoreram]

@matt-usurp updated :)