Laravel 5.2 Class not found but class is there

ISSUE: Attempting to freshly install Laravel 5 and convert my Laravel 4 code to Laravel 5.

REQUEST: Please help me find the error and provide detailed instructions on how to correct it.

ERROR: FatalThrowableError in IndexController.php line 21: Fatal error: Class 'App\Library\AdditionalPCs' not found

Notes: I have put the additionalPCs.php file in both its own directory App\Libary\additionalPCs and directly into the App directory. Both places produce the same error.

Composer.json

"autoload": {
    "classmap": [
        "database",
        "app/Library"
    ],
    "psr-4": {
        "App\\": "app/"
    }
},

IndexController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Library\AdditionalPCs;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class IndexController extends Controller
{
    Protected $layout = 'master';
    /**
     * Display a listing of the resource.
     *
     * @return Response
     */
    public function index()
    {
        /**  */
        $numberofpcs = new additionalPCs();
        $addtpcs=$numberofpcs->display();
        $this->layout->content = View::make('index')->with('addtpcs', $addtpcs)->with('businesstypelist', businesstype::dropdown())->with('contracttermlist',ContractTerm::dropdown());
    }
}

additionalPCs.php

<?php
namespace App\Library\AdditionalPCs;

class additionalPCs extends additionalComputer {
    public function display() {
        return $this->displayMenu();    
    }
}

via Chebli Mohamed