update multiselect ver

Author: icebob

full/index.html

@@ -25,7 +25,7 @@
 	<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery.maskedinput/1.4.1/jquery.maskedinput.js"></script>
 	<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/ion-rangeslider/2.1.4/js/ion.rangeSlider.js"></script>
 	<!-- Vanilla libs -->
-	<script type="text/javascript" src="https://unpkg.com/vue-multiselect@2.0.0-beta.13"></script>
+	<script type="text/javascript" src="https://unpkg.com/vue-multiselect@2.0.0-beta.15"></script>
 	<script type="text/javascript" src="https://rawgit.com/nosir/cleave.js/master/dist/cleave.min.js"></script>
 	<script type="text/javascript" src="https://nosir.github.io/cleave.js/lib/cleave-phone.i18n.js"></script>
 	<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/noUiSlider/9.0.0/nouislider.js"></script>