update demo

docs/assets/js/common.js

@@ -9,8 +9,11 @@
     var $lib = document.querySelector('.libsInput');
     var $run = document.querySelector('.run');
     var $popups = document.querySelector('.popups');
+    var $version = document.querySelector('.version');
     var loaddLib = [];
 
+    $version.textContent = 'v' + Artplayer.version;
+
     consola.creat({
         target: '.console',
         size: '100%',