Change Logo that is Favicon Friendly

Changes the icon to the one proposed in react-bootstrap#703

Author: mtscout6

docs/assets/favicon.ico

@@ -49,7 +49,7 @@ const Root = React.createClass({
         <meta http-equiv="X-UA-Compatible" content="IE=edge">
         <meta name="viewport" content="width=device-width, initial-scale=1.0">
         <link href="${this.props.assetBaseUrl}/assets/bundle.css" rel="stylesheet">
-        <link href="${this.props.assetBaseUrl}/assets/favicon.ico" type="image/x-icon" rel="icon">
+        <link href="${this.props.assetBaseUrl}/assets/favicon.ico?v=2" type="image/x-icon" rel="shortcut icon">
         <!--[if lt IE 9]>
         <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
         <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>