R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'sortable'

sortable::built_in |  | Using rank list and bucket lists in Shiny apps | HTML | source | R code
sortable::cloning |  | Cloning and removing elements | HTML | source | R code
sortable::novel_solutions |  | Novel solutions using sortable in shiny apps | HTML | source | R code
sortable::shiny_modules |  | Using `sortable` with `shiny` modules | HTML | source | R code
sortable::understanding_sortable_js |  | Understanding the interface to sortable.js | HTML | source | R code
sortable::updating_rank_list |  | Dynamically updating a rank_list element | HTML | source | R code
sortable::using_custom_css |  | Using custom styles with CSS | HTML | source | R code