You can install the released version of RiemBase from CRAN with:
install.packages("RiemBase")
or the development version from github:
# Run
# > install.packages("devtools")
# if not installed.
library(devtools)
# devtools::install_github("kisungyou/RiemBase")
install.packages("RiemBase", repos = c('https://kisungyou.r-universe.dev', 'https://cloud.r-project.org'))