Document many undocumented options.

The tabs here came out like a train-wreck. Likely will need some
whitespace reformatting.

I'll note that 80% of JavaScript projects on Github use spaces instead
of tabs, so they don't the tab-alignment is train-wreck problem:
http://sideeffect.kr/popularconvention#javascript
Merge pull request #27 from markstos/fifoDir-is-undocumented

Document many undocumented options.