Grab yourself a personal access token. Then...
export HOMEBREW_GITHUB_API_TOKEN=...
brew tap get-bridge/tap git@github.com:get-bridge/homebrew-tap.git
brew install bridge-vpn-cli
Or install via URL (which will not receive updates):
brew install https://raw.githubusercontent.com/get-bridge/homebrew-tap/master/Formula/bridge-vpn-cli.rb
brew install truss-cli
Or install via URL (which will not receive updates):
brew install https://raw.githubusercontent.com/get-bridge/homebrew-tap/master/Formula/bridge-vpn-cli.rb
brew help
, man brew
or check Homebrew's documentation.