title: Make local repository fall to the default repositories
body: <p>I have a local nexus repository in my organization. I would like to make sure that when a new artifact needs to be loaded on a developer's machine it will first go to the local repository and if the artifact is not found fallback to the default maven repositories and download it to the local repository and then to the developer's machine.</p>
  
  <p>Is using <code>mirrorOf</code> in each machine's <code>settings.xml</code> the way to go?</p>