MAPG-3 create basic contoller functionality

public/index.php

@@ -0,0 +1,16 @@
+<?php
+
+require '../main.php';
+
+// very basic routing
+$url = $_SERVER['REQUEST_URI'];
+switch($url) {
+    case '/':
+        $controller = new MapGuesser\Controller\GuessController();
+        break;
+    default:
+        echo 'Error 404';
+        die;
+}
+
+echo $controller->render();