Nuget package for Microsoft.VisualStudio.TestPlatform and Microsoft.VisualStudio.TestWindow

Hi,

I am building a VS Extension that integrates with the VS Test Runner on VS2013 (soon to port to VS2015 support). 

I see everything working fine, except I cannot build the project without Visual Studio installed on the build machine. I would like to know if there is a way to add references to Microsoft.VisualStudio.TestPlatform and Microsoft.VisualStudio.TestWindow namespaces without having to install Visual Studio, preferably via a Nuget package.

If there isn't one, is it okay if I copied the required dlls and checked them into my project repository?

Thanks!

Srikanth