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/helpers/path_helper.php b/system/helpers/path_helper.php
index 30d26d6..6abff06 100644
--- a/system/helpers/path_helper.php
+++ b/system/helpers/path_helper.php
@@ -57,7 +57,7 @@
 		// Make sure the path exists

 		if ($check_existance == TRUE)

 		{

-			if ( ! is_dir($path))

+			if (! is_dir($path))

 			{

 				show_error('Not a valid path: '.$path);

 			}