Install NEST from zip file on disk

I'm new to NuGet.

I downloaded the NuGet package from here: https://github.com/elastic/elasticsearch-net (the zip file).

Then I extracted the zip and followed the instructions here: http://stackoverflow.com/a/10240180/420667 . In my solution in Visual Studio I did Tools > NuGet Package Manager > Package Manager Settings > and added to the package sources a "local disk" source with the source being the elasticsearch-net extracted folder.

Then I did Tools > NuGet Package Manager > Package Manager Console, updated the Package Source drop down to "local disk", the project to the project of my solution that I wanted to add it to, and did "find-package" but nothing showed up.

At that point I just gave up. How can I build using just the zip file? How can I incorporate it into my solution? Thank you in advance.

I'm running Windows 7 with Visual Studio 2015.