readd implementation folder

implementation/04/src/Bootstrap.php

@@ -0,0 +1,34 @@
+<?php declare(strict_types=1);
+
+namespace Lubian\NoFramework;
+
+use Throwable;
+use Whoops\Handler\PrettyPageHandler;
+use Whoops\Run;
+
+use function error_log;
+use function error_reporting;
+use function getenv;
+
+use const E_ALL;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$environment = getenv('ENVIRONMENT') ?: 'dev';
+
+error_reporting(E_ALL);
+
+$whoops = new Run;
+
+if ($environment === 'dev') {
+    $whoops->pushHandler(new PrettyPageHandler);
+} else {
+    $whoops->pushHandler(function (Throwable $t) {
+        error_log('ERROR: ' . $t->getMessage(), $t->getCode());
+        echo 'Oooopsie';
+    });
+}
+
+$whoops->register();
+
+echo 'Hello World!';