> install_github("qinwf/cidian")
WARNING: Rtools is required to build R packages, but is not currently installed.
Please download and install Rtools 4.0 from https://cran.r-project.org/bin/windows/Rtools/.
Error: Failed to install 'unknown package' from GitHub:
HTTP error 404.
Not Found
Did you spell the repo owner (`qinwf`) and repo name (`cidian`) correctly?
- If spelling is correct, check that you have the required permissions to access the repo.