Add changelog for pull #1017
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index 1b57c89..0823196 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -26,7 +26,7 @@
  */
 
 /**
- * CodeIgniter Memcached Caching Class
+ * CodeIgniter File Caching Class
  *
  * @package		CodeIgniter
  * @subpackage	Libraries
@@ -202,4 +202,4 @@
 }
 
 /* End of file Cache_file.php */
-/* Location: ./system/libraries/Cache/drivers/Cache_file.php */
+/* Location: ./system/libraries/Cache/drivers/Cache_file.php */
\ No newline at end of file