New Post: How to install a NuGet package on the command line to a Visual Studio Project?

I downloaded nuget.exe and I have tried the install. I would like to target a visual studio project or solution on the command line outside of Visual Studio. It is simply downloading the package with a version number on the end. MyOutputDirectory is the output directory which has a Visual studio solution there.

nuget install nhibernate -o MyOutputDirectory

Thanks,
Greg