Made Latte cache dir configurable

app.php

@@ -40,9 +40,12 @@ define('ROOT_URL', $config['root_url']);
  * Set up app with custom Latte view
  */
 
+if (!file_exists($config['cache_dir']))
+    mkdir($config['cache_dir'], 0777, true);
+
 $view = new Slim\Latte\LatteView(array(
     'path' => __DIR__ . '/templates',
-    'cache' => __DIR__ . '/.cache/latte',
+    'cache' => $config['cache_dir'] . '/latte',
     'configure_engine' => function ($engine) {
         // support for {_'...'} syntax in latte templates
         $engine->addFilter('translate', function() {