First, install the devtools package (if it isn't already) and then load it.
if (!require(devtools)) install.packages("devtools")
library(devtools)
Next, install and load cbmbtools.
install_github("https://github.com/cb-42/cbmbtools")
library(cbmbtools)
The functions, templates, and datasets contained within cbmbtools should now be accessible within your R environment.
To update a previous installation to the latest version, use:
devtools::update_packages("cbmbtools")
Note that this package is in active development. If a newer version of cbmbtools is installed after the library has already been loaded in the current R session, you may need to restart your R session and then update/load the latest version.