libu2f-server Package Installation on Mac

About abcde : Server-side of the Universal 2nd Factor (U2F) protocol!
More Information: https://developers.yubico.com/libu2f-server/
Steps:

  1. Launch Terminal by pressing command+space, type terminal and hit Enter key.
  2. Run
    ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null
  3. Install
    brew install libu2f-server

Done!