Downloads Pandoc in app_dir. If Pandoc has already been downloaded, get_Pandoc will use that file. If the download fails it will stop.
get_Pandoc(app_dir, Pandoc_version = rmarkdown::pandoc_version())Shiny app's directory, defaults to getwd().
Pandoc version to use, defaults to: pandoc_version. This ensures that the same version of Pandoc used during development is installed on users' computers.
sprintf("pandoc-%s-windows.msi", Pandoc_version) in app_dir.
If create_app(include_Pandoc = TRUE), then get_Pandoc.
get_R, copy_installation, create_config, create_bat, directives, setup, languages, tasks, files, icons, run, and code.