Fix example in README

Author: akrabat

README.md

@@ -31,7 +31,7 @@ $container['view'] = function ($c) {
 
     // Instantiate and add Slim specific extension
     $router = $c->get('router');
-    $uri = \Slim\Http\Uri::createFromEnvironment(new \Slim\Http\Environment($_SERVER)):
+    $uri = \Slim\Http\Uri::createFromEnvironment(new \Slim\Http\Environment($_SERVER));
     $view->addExtension(new \Slim\Views\TwigExtension($router, $uri));
 
     return $view;