title: Class 'ServiceProvider' not found, can't autload serviceprovider
body: <p>I am trying to learning laravel package development I had write laravel package by following some tutorials but can't register its service provider in my app. I had upload my package to github. here is my repo <a href="https://github.com/zohaibhassan156/laravel-paysimple" rel="nofollow noreferrer">https://github.com/zohaibhassan156/laravel-paysimple</a></p>
  
  <p>Add this in my main composer.json </p>
  
  <pre><code>"psr-4": {
    "App\\": "app/",
    "ZohaibHassan156\\LaravelPaySimple\\": "zohaibhassan156/laravel-paysimple/src/"
  }
  </code></pre>
  
  <p>and this in my config/app/php</p>
  
  <pre><code>    \ZohaibHassan156\LaravelPaySimple\PaySimpleServiceProvider::class,
  </code></pre>