如何在Laravel 5.2中访问它？

I'm using Laravel 5.2 and I've followed the instructions stated here.

However, when I attempt to access it in my controller, I get an error:

Class 'App\Http\Controllers\IPBWI' not found @ line 12

<?php

 namespace App\Http\Controllers;

 use Haslv\Ipbwi;

  MyController extends Controller {

    public function index() {

      $member_info = IPBWI::member()->info(); //line 12
      //etc

    }    
}

I understand what's wrong but I don't understand how do to correctly reference it.

Could you help me out?

I'm not sure where you got this, but I would take it out:

use Haslv\Ipbwi;

If you want to use Laravel's facade and you followed the instructions on the github page, then you should add this to the top of your controller:

use IPBWI;

This is also case-sensitive so make sure that it matches the case in this line of code in your config/app.php file:

'IPBWI' => 'Haslv\Ipbwi\Facade',

You need to move your namespace and use statement above the class declaration.

<?php

namespace App\Http\Controllers;

use Haslv\Ipbwi;

class MyController extends Controller {
    // controller code
}