To install with Git:
mkdir -p ~/Library/Application\ Support/TextMate/Bundles
cd ~/Library/Application\ Support/TextMate/Bundles
git clone git://github.com/andyh/TYPO3.tmbundle.git
osascript -e 'tell app "TextMate" to reload bundles'
To install without Git:
mkdir -p ~/Library/Application\ Support/TextMate/Bundles
cd ~/Library/Application\ Support/TextMate/Bundles
wget https://github.com/andyh/TYPO3.tmbundle/tarball/master
tar zxf andyh-TYPO3.tmbundle*.tar.gz
rm andyh-TYPO3.tmbundle*.tar.gz
mv andyh-TYPO3.tmbundle* "TYPO3.tmbundle"
osascript -e 'tell app "TextMate" to reload bundles'