title: Pyrus install error
body: <p>I am trying to install zend framework 2 using pyrus but i get a strange error on pyrus install : <code>Pyrus\Config\Exception: Unable to parse invalid PEAR configuration at "."
   Pyrus\Config\Exception: Document is empty
    Pyrus\Config\Exception: Start tag expected, '&lt;' not found
  </code></p>
  
  <p>My config is :</p>
  
  <pre><code>&lt;?xml version="1.0"?&gt;
  &lt;pearconfig version="1.0"&gt;
       &lt;default_channel&gt;pear2.php.net&lt;/default_channel&gt;
       &lt;auto_discover&gt;0&lt;/auto_discover&gt;
       &lt;http_proxy&gt;&lt;/http_proxy&gt;
       &lt;cache_dir&gt;~/.pear/cache&lt;/cache_dir&gt;
       &lt;temp_dir&gt;~/.pear/temp&lt;/temp_dir&gt;
       &lt;verbose&gt;1&lt;/verbose&gt;
       &lt;preferred_state&gt;stable&lt;/preferred_state&gt;
       &lt;umask&gt;0022&lt;/umask&gt;
       &lt;cache_ttl&gt;3600&lt;/cache_ttl&gt;
       &lt;my_pear_path&gt;.&lt;/my_pear_path&gt;
       &lt;plugins_dir&gt;/home/sebastian/.pear&lt;/plugins_dir&gt;
  &lt;/pearconfig&gt;
  </code></pre>
  
  <p>Can someone help me figure out what is wrong with this ?</p>