diff --git a/README.md b/README.md
index a8abe7a..854c838 100644
--- a/README.md
+++ b/README.md
@@ -99,5 +99,6 @@ option to false.
 	   'removeWithBackspace' : true,
 	   'minChars' : 0,
 	   'maxChars' : 0, // if not provided there is no limit
-	   'placeholderColor' : '#666666'
+	   'placeholderColor' : '#666666',
+	   'unique' : true // set to false if you want to allow duplicate tags
 	});