title: Facebook SDK. File required is not in the folder
body: <p>This is my first facebook app I am trying to create. I started reading about it, I downloaded the SDK, looked for examples and in every code I found they start with importing a <code>facebook.php</code> file that is missing from the SDK folder I downloaded from facebook - <a href="https://developers.facebook.com/docs/php/gettingstarted/4.0.0" rel="nofollow">https://developers.facebook.com/docs/php/gettingstarted/4.0.0</a>. Even on github <a href="https://github.com/facebook/facebook-php-sdk" rel="nofollow">https://github.com/facebook/facebook-php-sdk</a> the shown code starts with <code>require 'facebook-php-sdk/src/facebook.php';</code>. But once again, this file doesn't exists. How do I use the SDK?</p>