Thank you for response.
We are interested in your product.
Actually to start development I have to demonstrate Signature.Net.Sample.Mvc hosted on IIS for possible clients.
Here are details about my second question.
You are right. In Visual Studio in properties of project to run Signature.Net.Sample.Mvc on Local IIS I write virtual directory name in Project URL field(see attached screen)
Also those code snippets affects URL creating in JS:
var gdSignaturePrefix ='gd-signature';
ViewContext.AppPath = '/gd-signature/signature2/';
ViewContext.PortalServiceHost = '/gd-signature/signature2/';
var gdSignatureHostUrl = '';