diff --git a/javascript_implementation/README.md b/javascript_implementation/README.md
index 9b1cc8d..2f15f51 100644
--- a/javascript_implementation/README.md
+++ b/javascript_implementation/README.md
@@ -15,6 +15,7 @@ See **demo** at [dematte.at/cpn/javaScript_implementation](http://dematte.at/cpn
         klass: window.ColorPicker,
         input: elm,
         patch: elm,
+        init: function(elm){}, // initialization callback (before colorPicker gets initialized though)
         // animationSpeed: 200, will be supported soon
         // draggable: true,
         multipleInstances: false
@@ -25,4 +26,4 @@ See **demo** at [dematte.at/cpn/javaScript_implementation](http://dematte.at/cpn
         renderCallback: renderCallback
         // and all other options from color and colorPicker
     });
-```
\ No newline at end of file
+```