To install via Git:
cd ~/"Library/Application Support/TextMate/Bundles/"
git clone git://github.com/trey/trey-django-tmbundle.git "Trey - Django.tmbundle"
osascript -e 'tell app "TextMate" to reload bundles'
(Instructions stolen from the GitHub Bundle.)
More information about creating a Git repository for TextMate Bundles.