title: How do I get NuGet to install/update all the packages in the packages.config?
body: <p>I have a solution with multiple projects in it. Most of the third party references are missing, yet there are <code>packages.config</code> file for each project.  <strong>How do I get NuGet to install/update all the packages needed?</strong> Does this need to be done via command line for each project?</p>