Run sh install.sh to install all the parts of helpme. Then run helpme-create [TOPIC] to create helpmes, helpme [TOPIC] to read it, helpme-delete and helpme-edit are obvious. You should never need to manually run either of the completion scripts.
If you don't have anything in ~/.bash_completion.d/, you may need to add source .bash_completion to .bash_profile and add this script to your home directory:
for bcfile in ~/.bash_completion.d/* ; do
source $bcfile
doneas .bash_completion