title: Adding reference to another project from visual studio code
body: <p>If a library (eg, on github) doesn't distribute itself via a nuget package, I'd have to manually include it as a reference, correct? I see a lot of reference posts for how to add a reference to a project for Visual Studio, but I can't seem to figure out how to do it on Visual Studio Code.</p>
  
  <p>In this case, I've downloaded the library's zip, and moved the expanded folder into my project, and then tried <code>using &lt;namespace&gt;</code>, which did not work.</p>
  
  <p>EDIT:</p>
  
  <p>I noticed that this downloaded zip contained a <code>.nuspec</code>. Is there something I can do with this file extension to import it in my project?</p>