Updated README.md

Author: 45kb

README.md

@@ -154,6 +154,7 @@ You can edit the default Css file `angular-datepicker.css` if you want to make a
 More about it https://github.com/720kb/angular-datepicker/tree/master/themes.
 
 Here is an example of a [Dark Theme](http://codepen.io/45kb/pen/bjslv) made using custom Css.
+_Please note that the example may be not updated to the latest angular or module version_
 
 ##Contributing