Install by using git clone:
git clone git://github.com/louisch/dotbash.git
You will need to create symlinks to the bash configuration files:
mv ~/.bashrc ~/.bashrc_original
ln -s <path/to/cloned/repo>/bashrc ~/.bashrc
mv ~/.profile ~/.profile_original
ln -s <path/to/cloned/repo>/profile ~/.profile
mv ~/.bash_profile ~/.bash_profile_original
ln -s <path/to/cloned/repo>/bash_profile ~/.bash_profile
mv ~/.inputrc ~/.inputrc_original
ln -s ~/.bash/inputrc ~/.inputrc