rename .Rmarkdown/.Rmkd vignettes to .Rmd, since the R 3.0.1 bug has been fixed (#578)
tweak contents of docco vignettes
reveal the top secret about the docco-classic vignette
rm local copies of highlight.js for knit_rd()
remove highlight.js and css from the shiny app; use the online version instead
rename assets to www, so there is no need to addResourcePath()
sync with framed.sty TeXLive 2012
mostly cosmetic, using paste()
closes #597: use options(knitr.width) or opts_knit$get('width')
bump version; prepare cran release