diff --git a/README b/README
index a6f6460..4409a95 100644
--- a/README
+++ b/README
@@ -1,4 +1,7 @@
-Introduction:
+#Introduction:
 MultiLayerNavigation helps you implemntation the interaction -- 'drag to back' in a easy way.
 The only one thing you need to do is replacing your UINavigationController with the MLNavigation Controller. 
-In addtion, if there are a scroll view in your ViewController, you need to do one more thing -- replace the UIScrollView with MLScrollView or inherit it, that's all.
\ No newline at end of file
+In addtion, if there are a scroll view in your ViewController, you need to do one more thing -- replace the UIScrollView with MLScrollView or inherit it, that's all.
+
+#Known Issue
+1.NOT fully some scrollable view (webview/textview/tableview) yet.