Update for Dynamic Request URI / Allow PATH_INFO Environment

[amrikasir]

if you want PATH_INFO for Request uri:
I change Request.php a bit.

$klein = new \Klein\Klein;
$klein->respond('GET', '/hello', function () {
   return "Hello ";
});

#change REQUEST_URI to PATH_INFO
$requestClass = \Klein\Request::createFromGlobals();
$requestClass->seturi('PATH_INFO');

$klein->dispatch($requestClass);

sorry for my bad english