With Homebrew

1. Install Homebrew: ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
2. If you already have Homebrew installed, run brew update to pull in the latest formulae.
3. If you don't have Java 1.8+, you can install it using brew install brew-cask && brew cask install java.
4. Install the zanata-client: brew install zanata-client
5. Now you can run zanata-cli --help for more options.

Upgrading

1. Run brew update
2. Run brew upgrade zanata-client