Packaging node-webkit application as ".appx" (for Windows 8 Store)
I had worked with node-web-kit once, and I remember that your node app should have index.html file. WinRt apps are supporting Html5/Js. Try create WinJs app, put all files from nw.pak into project directories(html/css/js) and add your extended library like references to your project. I'm not sure about adding extend libraries, winJs app can give an error.