title: How to use private Github repo as npm dependency
body: <p>How do I list a private Github repo as a <code>"dependency"</code> in <code>package.json</code>? I tried <a href="https://docs.npmjs.com/files/package.json#github-urls">npm's Github URLs</a> syntaxes like <code>ryanve/example</code>, but doing <code>npm install</code> in the package folder gives "could not install" errors for the private dependencies. Is there a special syntax (or some other mechanism) for depending on private repos?</p>