testet on Mac OS X 10.9.1 with node.js 0.10.22

hello.js

console.log('Hello, world!');
phantom.exit();

Install PhantomJS and pa11y on a Mac

* Download PhantomJS here http://phantomjs.org/download.html
* Unzip and move /phantomjs-X.x.X-macosx/bin/phantomjs to Macintosh HD/bin/
* test at least "Hello World!" and "Page Loading" in some random folder on your HDD
* make sure nodejs is installed
* install [pa11y](https://github.com/nature/pa11y) with 'sudo npm install -g pa11y'
* try some examples 
** hello.js
** screenshot.js
** $ pa11y www.sub.uni-goettingen.de
** $ pa11y -r csv www.sub.uni-goettingen.de > report.csv
* be happy - go crazy

screenshot.js

var page = require('webpage').create();
page.open('http://www.sub.uni-goettingen.de', function() {
  page.render('subuni-goettingen.png');
  phantom.exit();
});