Hello World Package for PHP Composer

This is a hello world package for php composer beginners tutorial. read more from http://rivsen.github.io/post/how-to-publish-package-to-packagist-using-github-and-composer-step-by-step/

Usage

$ composer require rivsen/hello-world
$ touch test.php

<?php
require_once "vendor/autoload.php";

$hello = new Rivsen\Demo\Hello();
echo $hello->hello();

$ php test.php

It will print "Hello World!" then exit.