title: Phpdocumentor looks for custom templates in vendor directory
body: <p>I need to create custom template for PhpDocumentor. The problem is that paths defined in the <code>template.xml</code>, even when specified as absolute ones, are not resolved correctly. PhpDocumentor looks for them in the vendor directory. </p>
  
  <pre><code>&lt;template&gt;
      &lt;author&gt;Code Mine&lt;/author&gt;
      &lt;email&gt;office@code-mine.com&lt;/email&gt;
      &lt;description&gt;Template for Confluence API&lt;/description&gt;
      &lt;version&gt;1.0.0&lt;/version&gt;
      &lt;transformations&gt;
          &lt;transformation writer="twig" source="./index.html.twig" artifact="index.html"/&gt;
          &lt;transformation query="indexes.namespaces" writer="twig" source="./namespace.html.twig" /&gt;
          &lt;transformation query="indexes.classes" writer="twig" source="./class.html.twig" /&gt;
      &lt;/transformations&gt;
  &lt;/template&gt;
  </code></pre>
  
  <p>Despite fact that twig templates are located in path to which xml refers, I'm getting error that files don't exist.</p>
  
  <p>EDIT:</p>
  
  <p>I have also tried with setting up all configuration details in <code>phpdoc.xml</code> in hope that paths will be considered relative to configuration file but with no luck.</p>