Please see the Wiki for more information.
Why is this library special?
It's not, well not compared to the original code it was ported from.
The original API viewer is here (also, many thanks to wkeese for writing the dapi exporter for js-doc-parse which makes loading and parsing a breeze compared to loading/parsing XML).
This repository is just a port of the existing PHP code to node.js, however it's main aims are to remove the PHP dependency for viewing API docs and leverage node.js instead (eat what you preach), make it simpler to change the UI (templating, separating logical UI code from the data) and be able to generate a static output of the API documentation if needed.