title: Laravel Installation error
body: <p>I have downloaded laravel from github. I also have composer installed. My problem is when i type in </p>
  
  <pre><code>composer install
  </code></pre>
  
  <p><a href="http://i.stack.imgur.com/xXhd8.png" rel="nofollow">I got the following error.</a> I can't fix it.</p>