delete example.php, README contains a sufficient example

example.php

-<?php
-
-require_once __DIR__.'/silex.phar';
-
-use Symfony\Component\HttpFoundation\Request;
-use Silex\Framework;
-
-$hello = function($name)
-{
-    return "Hello $name";
-};
-
-$goodbye = function($name)
-{
-    return "Goodbye $name";
-};
-
-$framework = new Framework(array(
-    'GET /hello/:name'    => $hello,
-    'POST /goodbye/:name' => $goodbye,
-));
-
-// Simulate a hello request without a Client
-//$request = Request::create('/hello/Fabien');
-//$framework->run($request);
-
-// Simulate a goodbye request without a Client
-//$request = Request::create('/goodbye/Fabien', 'post');
-//$framework->run($request);
-
-$framework->run();