Add fav icon

Author: edisdev

doc/datepicker.ico

@@ -1,5 +1,6 @@
 <meta charset="utf-8">
 <title>Vue Datepicker UI Demo</title>
+<link rel="icon" href="datepicker.ico">
 <script src="https://unpkg.com/vue"></script>
 <script src="/lib/vuedatepickerui.umd.js"></script>
 <link rel="stylesheet" href="/lib/vuedatepickerui.css">