Environment variables

[olivroy]

usethis no longer recommends saving a GITHUB_PAT to .Renviron

https://usethis.r-lib.org/articles/git-credentials.html?q=github_pa#put-your-pat-into-the-local-git-credential-store

Could this section be updated to reflect latest information?
I am still struggling to understand whether an option is the best, an environment variable, sys.setenv in rprofile etc.

https://rstats.wtf/r-startup.html#renviron

Thanks

edit: tidyverse/design#65 for discussion