fixed whitespace, massaged Zip read_dir() docs
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index 3ba3ddc..92dfc81 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -273,7 +273,7 @@
 	 */
 	function read_dir($path, $preserve_filepath = TRUE, $root_path = NULL)
 	{
-		if (!$fp = @opendir($path))
+		if ( ! $fp = @opendir($path))
 		{
 			return FALSE;
 		}
@@ -295,7 +295,6 @@
 			{
 				$this->read_dir($path.$file."/", $preserve_filepath, $root_path);
 			}
-
 			else
 			{
 				if (FALSE !== ($data = file_get_contents($path.$file)))
@@ -311,6 +310,7 @@
 				}
 			}
 		}
+
 		return TRUE;
 	}