Added some docs to CI core files
diff --git a/system/database/DB.php b/system/database/DB.php
old mode 100644
new mode 100755
index 33207d8..8314d3b
--- a/system/database/DB.php
+++ b/system/database/DB.php
@@ -21,6 +21,8 @@
  * @category	Database
  * @author		ExpressionEngine Dev Team
  * @link		http://codeigniter.com/user_guide/database/
+ * @param 	string
+ * @param 	bool	Determines if active record should be used or not
  */
 function &DB($params = '', $active_record_override = NULL)
 {
@@ -35,7 +37,7 @@
 				show_error('The configuration file database.php does not exist.');
 			}
 		}
-		
+
 		include($file_path);
 
 		if ( ! isset($db) OR count($db) == 0)