TextMate bundle with syntax highlighting and snippets for Sinatra.
To install via Git:
mkdir -p ~/Library/Application\ Support/TextMate/Bundles
cd ~/Library/Application\ Support/TextMate/Bundles
git clone git://github.com/mateusprado/sinatra-matebundle.git "Sinatra.tmbundle"
osascript -e 'tell app "TextMate" to reload bundles'