Added some docs to CI core files
diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php
old mode 100644
new mode 100755
index bff86a9..6a63ca7
--- a/system/core/Exceptions.php
+++ b/system/core/Exceptions.php
@@ -30,8 +30,22 @@
var $message;
var $filename;
var $line;
+
+ /**
+ * Nesting level of the output buffering mechanism
+ * Used to
+ *
+ * @var int
+ * @access public
+ */
var $ob_level;
+ /**
+ * List if available error levels
+ *
+ * @var array
+ * @access public
+ */
var $levels = array(
E_ERROR => 'Error',
E_WARNING => 'Warning',