title: How do you get composer to install a non-composer package?
body: <p>I am trying to get composer to download the following library from this project, however, it does not have a <code>composer.json</code> file in it so I'm not sure if this is possible.</p>
  
  <pre><code>{
      "require" : {
          "fguillot/picoFeed" : "*"
      },
      "repositories": [
          {
              "type": "vcs",
              "url": "https://github.com/fguillot/picoFeed"
          }
      ]
  }
  </code></pre>
  
  <p><strong>Error:</strong></p>
  
  <blockquote>
    <p>[Composer\Repository\InvalidRepositoryException]<br>
    No valid composer.json was found in any branch or tag of
    <a href="https://github.com/fguillot/picoFeed" rel="noreferrer">https://github.com/fguillot/picoFeed</a>, could not load a package
    from it.</p>
  </blockquote>