Requirements
Once you've been registered and after having installed the mobile application,
click this link to create your own API application
and get back your personal token/key.
Example
<?php
use Clicksco\Pushover\PushMessage;
use Clicksco\Pushover\PushManager;
$push_message = new PushMessage;
$push_message->setTitle('This is the title');
$push_message->setDate(new \DateTime());
$push_message->setMessage('This is the message');
$push_manager = new PushManager('YOUR-APP-TOKEN');
$push_manager->setMessage($push_message);
$push_manager->addUser('YOUR-USER-TOKEN');
echo $push_manager->send();