Added NuGet dependencies

[mrvux]

Bit long time on this one, so couple of thoughts :) I'm happy to provide this package as nuget, but I'm definitely not keen on having it import slimdx via nuget. I prefer to have hard dependency since from checkout I have a ready to build system. Hope that makes sense

[smakhtin]

Yep, i also remade it. So now i just added auto packaging script for publishing it to NuGet. Will make another pull request today or tomorrow.