title: Some doubts about package with Vagrant
body: <p>I'm new working with Vagrant. I have some doubts about the package command, because I did some changes in my basebox <strong>precise32.box</strong> and i want to reuse this box but I want to know what is meaning of [vm-name] parameter because it not appears on --help report.</p>
  
  <p>And what kind of files can be packaged with the box?</p>
  
  <pre class="lang-js prettyprint-override"><code>roberto@rcisla-pc:~$ vagrant package --help
  Usage: vagrant package [vm-name] [--base name] [--output name.box]
                         [--include one,two,three] [--vagrantfile file]
  
          --base NAME                  Name of a VM in virtualbox to package as a base box
          --output NAME                Name of the file to output
          --include x,y,z              Additional files to package with the box.
          --vagrantfile file           Vagrantfile to package with the box.
      -h, --help                       Print this help
  </code></pre>
  
  <p>Thanks for any helps.</p>