Mandeep,
The readme.md under the DotNet talks about
- Install the contents of the DotNet folder as a .NET Web Application, specifying a .NET 4.0 application pool or later
- then edit the proxy.config to add serverUrls
I just created a "proxy" folder under my wwwroot on my webserver set it as an application in IIS (Convert to Application option when you right click on the folder in IIS) and set its application pool to .NET 4.0 or higher as mentioned earlier.