Hi Andy
Thanks for posting and sorry that the documentation was out of date. Would you be up for pushing a pull request to fix it on Github? You simply click the edit icon on https://github.com/neos/neos/blob/2.0/Documentation/HowTos/IntegratingJavaScriptSlider.rst and make the adjustment, then submit the change as a pull request for the 2.0 branch (not master).
Thanks