Respect CRAN recommendations for images

[hadley]

If the images are also used for vignettes or Rd files, you can put them
in the 'vignettes' or 'man/figures' directories. Otherwise, please put
them in the top-level 'tools' directory, or a subdirectory of it.

This probably means we should copy all files with common image extensions from those directories.

[hadley]

All files in vignettes and man/figures are now copied; I think this just means we should tweak the location of any relative image links on the homepage:

• vignettes/x.png -> articles/x.png
• man/figures/x.png -> reference/figures/x.png

[IndrajeetPatil]

@hadley I created a webpage for my package with pkgdown and, as recommended, all my figures from man/figures/x.png are getting copied to reference/figures/x.png (https://github.com/IndrajeetPatil/ggstatsplot/tree/master/docs/reference/figures) when I run pkgdown::build_site().

But the resulting website still doesn't display any of the images:
https://indrajeetpatil.github.io/ggstatsplot/

What can I change to display the images properly?

[hadley]

@IndrajeetPatil please open a new issue, and include links to the source readme and generated index.html in github

[IndrajeetPatil]

Done! Thanks.