Vignette stub

You can see the anim.plots vignette online at github.io. The file size was too large to include in CRAN. If you want to build the vignette yourself, run:

rmd_file <- system.file('doc', 'anim.plots.Rmd', package = 'anim.plots')
doc_dir <- 'path/to/somewhere/appropriate' # e.g. your Desktop folder
rmarkdown::render(rmd_file, clean = FALSE, output_dir = doc_dir)

You can then view it in your web browser.