added twig demo

demo/bridge/twig/composer.json

@@ -0,0 +1,5 @@
+{
+    "require": {
+        "twig/twig": "*"
+    }
+}

demo/bridge/twig/foobar.html

@@ -0,0 +1 @@
+foobar

demo/bridge/twig/hello.html

@@ -0,0 +1,2 @@
+Hello {{ name }}
+{% include "foobar.html" %}

demo/bridge/twig/index.php

@@ -0,0 +1,14 @@
+<?php
+
+include __DIR__ . '/vendor/autoload.php';
+include __DIR__ . '/../../bootstrap.php';
+
+$loader = new Twig_Loader_Filesystem('.');
+$twig = new DebugBar\Bridge\Twig\TraceableTwigEnvironment(new Twig_Environment($loader), $debugbar['time']);
+
+$debugbar->addCollector(new DebugBar\Bridge\Twig\TwigCollector($twig));
+$debugbarRenderer->setBaseUrl('../../../src/DebugBar/Resources');
+
+render_demo_page(function() use ($twig) {
+    echo $twig->render('hello.html', array('name' => 'peter pan'));
+});

demo/index.php

@@ -29,5 +29,11 @@ render_demo_page(function() {
 <ul>
     <li><a href="pdo.php">PDO demo</a></li>
 </ul>
+<h2>Bridges</h2>
+<p>(you need to install needed dependencies first, run <code>composer.phar install</code> in each demo folders)</p>
+<ul>
+    <li><a href="bridge/swiftmailer">Swift mailer</a></li>
+    <li><a href="bridge/twig">Twig</a></li>
+</ul>
 <?php
 });