New API Reference

hi, hope all is well!

i migrated your API documentation from `yuidoc2md` to `jsdoc-to-markdown`..  you can see the end result here, notice the new API docs on the readme: https://github.com/75lb/fkt

If you merge this, you'll probably need to rebuild the `node_modules` directory in your project folder.. but first - make sure you have the latest node.js and npm installed, some of the `jsdoc-to-markdown` modules depend on the latest npm features.. 

```sh
$ rm -rvf node_modules
$ npm install
```