Updating code examples in user guide to use CI_Controller instead of Controller
diff --git a/user_guide/helpers/smiley_helper.html b/user_guide/helpers/smiley_helper.html
index d95562d..d7c2d16 100644
--- a/user_guide/helpers/smiley_helper.html
+++ b/user_guide/helpers/smiley_helper.html
@@ -99,11 +99,11 @@
 <textarea class="textarea" style="width:100%" cols="50" rows="25">
 &lt;?php
 
-class Smileys extends Controller {
+class Smileys extends CI_Controller {
 
 	function Smileys()
 	{
-		parent::Controller();
+		parent::CI_Controller();
 	}
 
 	function index()