This rebuilds outdated vignettes with buildVignette().
By default, it will rebuild all vignettes if the source file is newer than
the output pdf or html. (This means it will automatically re-build the
vignette if you change the vignette source, but not when you
change the R code). If you want finer control, add a Makefile to
vignettes/ and roxygen2 will use that instead.
Usage
vignette_roclet()
Details
To prevent RStudio from re-building the vignettes again when checking
your package, add --no-build-vignettes to the "Build Source Package"
field in your project options.