public static function addFile($filePath, $extensionToFind = '.php')
    {
		if (!$filePath instanceof SplFileInfo) {
			$filePath = new SplFileInfo($filePath);
        }

		$firstChar = substr($filePath->getBasename(), 0, 1);
		$extension = substr($filePath->getFilename(), strlen($extensionToFind)*-1);
		$className = $filePath->getBasename($extension);
		if ($extension == $extensionToFind && $firstChar === strtoupper($firstChar)) {
			self::addClass($className, $filePath->getRealPath());
		}
	}