installationProgress.commonHtml Property

var u = $au.uploader({
    //...other params...
});
var ip = $au.installationProgress(u);
ip.commonHtml("<p>Aurigma Image Uploader control is necessary to upload " +
"your files quickly and easily. You will be able to select multiple images in user-friendly " +
"interface instead of clumsy input fields with <strong>Browse</strong> button.</p>");
//...other params...
u.writeHtml();