install
First download css/js files:
cd .cabal/share/gitit-0.9/data/static/css
# download bootstrap.css
wget http://bootswatch.com/assets/css/bootstrap.css
mv screen.css screen.css.bak # backup screen.css
mv bootstrap.css screen.css
cd ../js
wget https://raw.github.com/humiaozuzu/gitit-bootstrappifier/master/gitit-bootstrap.js
# goto template dir
cd ../../templates
Then, let every page of gitit include gitit-bootstrap.js
just add <script src="/js/gitit-bootstrap.js" type="text/javascript"></script>
in file page.st
after line $javascripts$