This repository was not updated in some time and there are old versions and security issues. I won't be updating it any time soon so use at your own risk.
Middleman template with Twitter Bootstrap starter template, Haml and Sass
Use
git clone https://github.com/martinek/middleman-haml-bootstrap-sass.git ~/.middleman/middleman-haml-bootstrap-sass
middleman init my_new_project --template=middleman-haml-bootstrap-sass