Event calendar in laravel

I've tried this link https://github.com/maddhatter/laravel-fullcalendar.

Below codes are taken from the above link:

1) In composer.json

"require": {"maddhatter/laravel-fullcalendar": "~1.0" }

2) In app.php

'providers' => [MaddHatter\LaravelFullcalendar\ServiceProvider::class,]
'aliases' => ['Calendar' => MaddHatter\LaravelFullcalendar\Facades\Calendar::class,]

3) In controller

use MaddHatter\LaravelFullcalendar\Facades\Calendar;
use MaddHatter\LaravelFullcalendar\Event;
use Illuminate\Database\Eloquent\Model;


class EventModel extends Eloquent implements \MaddHatter\LaravelFullcalendar\Event
{

protected $dates = ['start', 'end'];

/**
 * Get the event's id number
 *
 * @return int
 */
public function getId() {
    return $this->id;
}

/**
 * Get the event's title
 *
 * @return string
 */
public function getTitle()
{
    return $this->title;
}

/**
 * Is it an all day event?
 *
 * @return bool
 */
public function isAllDay()
{
    return (bool)$this->all_day;
}

/**
 * Get the start time
 *
 * @return DateTime
 */
public function getStart()
{
    return $this->start;
}

/**
 * Get the end time
 *
 * @return DateTime
 */
public function getEnd()
{
    return $this->end;
}
}

4) In view

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.9.0/moment.min.js"></script>

<script src="//cdnjs.cloudflare.com/ajax/libs/fullcalendar/2.2.7/fullcalendar.min.js"></script>

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/fullcalendar/2.2.7/fullcalendar.min.css"/>

{!! $calendar->calendar() !!}
{!! $calendar->script() !!}

I've added the above codes, but i got the error below

FatalErrorException in ProviderRepository.php line 146: Class 'MaddHatter\LaravelFullcalendar\ServiceProvider' not found

Fatal error

Please give your idea for this laravel beginner.

via Geetha Lakshmi