title: How to update Yeoman dependencies?
body: <p>Every yeoman generator has its package.json and bower.json that contain the dependencies.
  When I initialize a new project with:</p>
  <pre><code>yo somegenerator
  </code></pre>
  <p>it starts to download and install the dependencies, according to the version saved in the files.</p>
  <h3>My question is: how can I update the dependencies when I initialize a new project?</h3>
  <p>I would that when I type &quot;yo somegenerator&quot;, it  download the latest dependencies and update the files (package.json and bower.json) with the current version.</p>