Facebook profile picture overlay creator. http://isupportnetneutrality.in/
It downloads user's profile picture and paste an overlay image on it and presents an option to update it to his facebook feed.
It uses Facebook_SDK_v4 for authentication and uploads.
Please add a file named cred.php to the folder and add the following lines in them:
<?php
$_YOUR_APP_ID = 'XYZ';
$_YOUR_APP_SECRET = 'XYZ';
$callback_url = '';// example.com/login.php
?>
Install curl
sudo apt-get install curl
Remember to fill 'App domains' , 'Site URL' , 'Valid OAuth redirect URIs' accordingly.
