Windows8 fix

Hi,

I fixed a wrong reference of the cordova-X.Y.Z.js file.

I also added a Visual Studio project template metadata file.
I get inspired by this post http://www.infragistics.com/community/blogs/mihail_mateev/archive/2013/01/07/using-phonegap-in-windows-8-store-applications.aspx

I test the template in Visual Studio Express 2012.

Thank you.
Corrado