Install R from MRAN date into electricShine folder

install_r(cran_like_url = NULL, app_root_path,
  mac_url = "https://mac.r-project.org/el-capitan/R-3.6-branch/R-3.6-branch-el-capitan-sa-x86_64.tar.gz",
  permission_to_install = FALSE)

Arguments

cran_like_url

CRAN-like url e.g. https://cran.r-project.org/bin/windows/base

app_root_path

path to current electricShine app build

mac_url

mac R installer url

permission_to_install

have permission to install R?