Lost twig v2 alias in ServiceProvider

[Moln]

TwigBridge/src/ServiceProvider.php

Line 263 in b8bd5db

$this->app->alias('twig', Twig_Environment::class);

Need:

$this->app->alias('twig', Twig_Environment::class); 
$this->app->alias('twig', \Twig\Environment::class); 

[barryvdh]

Can you make a PR?