Phug templates partial rendering

composer.json

{
   "require":{
      "phug/phug":"^0.3.2"
   }
}

index.php

<?php
include 'vendor/autoload.php';

$pug = new Phug\Renderer([
  'expressionLanguage' => 'php',
  'cache' => 'views/cache',
  'basedir' => 'views',
]);

$pug->displayFile('test');

layout.pug

doctype html
html
	head
		meta(charset='UTF-8')
		link(rel='stylesheet', href='css/skeleton.css')
	body.container.row
		aside.three.columns
		main.six.columns
			block content
		aside.three.columns
		footer

test.pug

extends layout.pug

block content
  b test test test