Here is the bootstrap code:
<?php
error_reporting(E_ALL);
try {
    /**
     * Read the configuration
     */
    $config = include __DIR__ . "/../app/config/config.php";
    /**
     * Read auto-loader
     */
    include __DIR__ . "/../app/config/loader.php";
    /**
     * Read services
     */
    include __DIR__ . "/../app/config/services.php";
    /**
     * Handle the request
     */
    $application = new \Phalcon\Mvc\Application($di);
    echo $application->handle()->getContent();
} catch (\Exception $e) {
    echo $e->getMessage();
}
AND Here is Services.php:
<?php
use Phalcon\DI\FactoryDefault;
use Phalcon\Mvc\View;
use Phalcon\Mvc\Url as UrlResolver;
use Phalcon\Db\Adapter\Pdo\Sqlite as DbAdapter;
use Phalcon\Mvc\View\Engine\Volt as VoltEngine;
use Phalcon\Mvc\Model\Metadata\Memory as MetaDataAdapter;
use Phalcon\Session\Adapter\Files as SessionAdapter;
/**
 * The FactoryDefault Dependency Injector automatically register the right services providing a full stack framework
 */
$di = new FactoryDefault();
/**
 * The URL component is used to generate all kind of urls in the application
 */
$di->set('url', function () use ($config) {
    $url = new UrlResolver();
    $url->setBaseUri($config->application->baseUri);
    return $url;
}, true);
/**
 * Setting up the view component
 */
$di->set('view', function () use ($config) {
    $view = new View();
    $view->setViewsDir($config->application->viewsDir);
    $view->registerEngines(array(
        '.phtml' => 'Phalcon\Mvc\View\Engine\Php'
    ));
    return $view;
}, true);
/**
 * Database connection for Sqlite based on config.php
 */
$di->set('db', function () use ($config) {
    return new DbAdapter(array(
        'dbname' => $config->database->dbname
    ));
});
/**
 * If the configuration specify the use of metadata adapter use it or use memory otherwise
 */
$di->set('modelsMetadata', function () {
    return new MetaDataAdapter();
});
/**
 * Start the session the first time some component request the session service
 */
$di->set('session', function () {
    $session = new SessionAdapter();
    $session->start();
    return $session;
});
/**
 * Create a models cache for frequently used static data
 */
$di->set('modelsCache',function() {
    //Create a Data frontend and set a default lifetime to 1 day
    $frontend = new Phalcon\Cache\Frontend\Data(array(
        'lifetime' => 86400
    ));
    // Set up APC Cache
    $cache = new Phalcon\Cache\Backend\Apc($frontend, array(
        'prefix' => 'cache'
    ));
    return $cache;
});
/**
 * Create a regular cache for frequently used static data
 */
$di->set('appCache',function() {
    //Create a Data frontend and set a default lifetime to 1 day
    $frontend = new Phalcon\Cache\Frontend\Data(array(
        'lifetime' => 86400
    ));
    // Set up APC Cache
    $cache = new Phalcon\Cache\Backend\Apc($frontend, array(
        'prefix' => 'appcache'
    ));
    return $cache;
});
/**
 * Take control of dispatcher in order to override EventManager methods
 */
$di->set('dispatcher', function() use ($di) {
    //Obtain the standard eventsManager from the DI
    $eventsManager = $di->getShared('eventsManager');
    //Instantiate the Security plugin
    $security = new Security($di);
    //Listen for events produced in the dispatcher using the Security plugin
    $eventsManager->attach('dispatch', $security);
    $dispatcher = new Phalcon\Mvc\Dispatcher();
    //Bind the EventsManager to the Dispatcher
    $dispatcher->setEventsManager($eventsManager);
    return $dispatcher;
});