Constructs this MTimeProtectedFastFileStorage object.
array $configuration: An associated array, containing at least these keys (the rest are ignored):
-bin. The storage bin. Multiple storage objects can be instantiated with the same configuration, but for different bins.
Overrides FileStorage::__construct
public function __construct(array $configuration) {
parent::__construct($configuration);
$this->secret = $configuration['secret'];
}