Use the following files:
(RECOMMENDED) jquery.nouislider.all.min.js - If you want to use libLink, wNumb and the Pips add-on. Includes noUiSlider. (ALTERNATIVE) jquery.nouislider.min.js - noUiSlider without any additions
(REQUIRED) jquery.nouislider.min.css - Styling (REQUIRED) (RECOMMENDED) jquery.nouislider.pips.min.css - If you are using the Pips add-on.