fix for the loggedIn state in Auth


1. when I call logout it goes here: https://github.com/laravel/framework/blob/master/src/Illuminate/Auth/Guard.php#L268 and it sets 		$this->loggedOut = true;

2. Notice that in attempt(), it doesn't set loggedOut back to false. https://github.com/laravel/framework/blob/master/src/Illuminate/Auth/Guard.php#L186

3. when I call Auth::user() in Guard.php, it checks whether it's loggedOut if it is, it will return nothing. https://github.com/laravel/framework/blob/master/src/Illuminate/Auth/Guard.php#L101

The fix is just one line, set the loggedIn flag to true.