Move example to "example" directory

Author: henriquemoody

bin/nginx-dev-runner example/bin/nginx-dev-runnerbin/nginx-dev-runner renamed to example/bin/nginx-dev-runner

@@ -1,5 +1,7 @@
 <?php
-require_once '../tests/bootstrap.php';
+
+require_once __DIR__.'/../../vendor/autoload.php';
+
 use Respect\Rest\Router;
 
 $r3 = new Router;