Added get_dir_file_info(), get_file_info(), and get_mime_by_extension() to the File Helper.

Changed ( ! condition) into (! condition) within the code
diff --git a/system/libraries/Benchmark.php b/system/libraries/Benchmark.php
index bca3782..323d966 100644
--- a/system/libraries/Benchmark.php
+++ b/system/libraries/Benchmark.php
@@ -71,12 +71,12 @@
 			return '{elapsed_time}';

 		}

 		

-		if ( ! isset($this->marker[$point1]))

+		if (! isset($this->marker[$point1]))

 		{

 			return '';

 		}

 		

-		if ( ! isset($this->marker[$point2]))

+		if (! isset($this->marker[$point2]))

 		{

 			$this->marker[$point2] = microtime();

 		}