This function is primarily for organisational level configuration. Supply
git hooks in the form of R functions and they will be executed via the
Rscript
interface.
nm_pre_commit_hook(cmd)
nm_pre_push_hook(cmd)
Optional command for setting the git hook.
If no cmd
is specified this returns the return value of
getOption("nm_pre_commit_hook")
. Otherwise there is no return value.