title: Updating composer after adding a dependency in Laravel 4 gives me error
body: <p>I get the following error on a fresh Laravel 4 install after adding a new dependency to the <code>composer.json</code> and running <code>composer update</code>. Any ideas?</p>
  
  <pre><code>[RuntimeException]
  Source directory /var/www/projects/adcraft/vendor/laravel/framework has uncommitted changes. 
  </code></pre>