#49 Error when doing a clean install of 2.1.0-beta

(1/1) FatalErrorException Call to undefined method Illuminate\Session\Store::set()
in InstallController.php (line 58)

When installing 2.1.0-beta.3, an error occurs due to a change made between Laravel 5.3 -> 5.4. First raised in #48 by @cozmalaurentiu. ``` (1/1) FatalErrorException Call to undefined method Illuminate\Session\Store::set() in InstallController.php (line 58) ```