Fix vs10 project

[Fisjkars]

Hello Robert,

I proposed this pull request as a quick and maybe not clean fix for compilation issue I had with Visual Studio.

By default, I tried to generate the project and I got some linker issues. I think this happened because all headers files were located in source folder in vs project.

As a quick fix, I reimported all these file in headers, but I lost folder hierarchy you created.

I hope I could give a help to the project with this pull request. Don't hesitate to give me your inputs