Install packages, from both CRAN and GitHub

Source: R/restore.R

Installs packages, from both CRAN and GitHub, and skips any packages that are already installed

install_packages_from_backup(cran_packages, gh_packages)

Arguments

cran_packages

A string vector with names of packages to be installed from CRAN
gh_packages

A string vector with names of repo\packages to be installed from GitHub