fixing vignette build in package build.

some problem with progress bar. I don't know and don't care.
writing vignette in earnest.
adding as.sr.data.frame

and being better about rownames and colnames
working on vignette.
working on vignette.

some usability hacks as well. figured out how htest are printed.
first pass at a vignette.

with that, the package is ready for beta testers, I believe. press send.