sublime-i18n-rails by Bilendo.de

Installation

# add the repository to the Sublime packages directory
cd ~/Library/Application\ Support/Sublime\ Text\ 3/Packages/
git clone git@github.com:bilendo/sublime-i18n-rails.git i18n-rails

Contribution

# if you want to contribute to the project,
# creating a symlink to a directory of your choice might be helpful
ln -s ~/Library/Application\ Support/Sublime\ Text\ 3/Packages/i18n-rails ~/Documents/my-projects/i18n-rails

note: you can get the Sublime packages path in the Sublime menu:
Sublime Text > Preferences > Browse Packages…