设置iPhone网页固定到桌面上的图标
<!--IOS Icon-->
<link rel="apple-touch-icon-precomposed" href="@Url.Content("~/Content/res/imgs/touch-icon-iphone.png")" />
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="@Url.Content("~/Content/res/imgs/touch-icon-ipad.png")" />
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="@Url.Content("~/Content/res/imgs/touch-icon-iphone-retina.png")" />
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="@Url.Content("~/Content/res/imgs/touch-icon-ipad-retina.png")" />