R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'drat'

drat::CombiningDratAndTravis |  | Combining Drat and Travis CI | HTML | source |
drat::DratFAQ |  | Drat Frequently Asked Questions | HTML | source |
drat::DratForPackageAuthors |  | Drat Basics for Package Authors: Distributing Packages | HTML | source |
drat::DratForPackageUsers |  | Drat Basics for Package Users: Installing or Updating Packages | HTML | source |
drat::DratStepByStep |  | Drat Step-by-Step | HTML | source |
drat::WhyDrat |  | Why Drat? | HTML | source |