viewport for frame and full

Playground/frame.html

@@ -22,6 +22,7 @@
     <meta name="msapplication-TileImage" content="https://www.babylonjs.com/img/favicon/ms-icon-144x144.png">
     <meta name="msapplication-config" content="https://www.babylonjs.com/img/favicon/browserconfig.xml">
     <meta name="theme-color" content="#ffffff">
+    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1">
 
     <script src="https://code.jquery.com/pep/0.4.2/pep.min.js"></script>
     

Playground/full.html

@@ -22,6 +22,7 @@
         <meta name="msapplication-TileImage" content="https://www.babylonjs.com/img/favicon/ms-icon-144x144.png">
         <meta name="msapplication-config" content="https://www.babylonjs.com/img/favicon/browserconfig.xml">
         <meta name="theme-color" content="#ffffff">
+        <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1">
 
         <script src="https://code.jquery.com/pep/0.4.2/pep.min.js"></script>
         <!-- Babylon.js -->