What is git-flow Package ?

Extensions to follow Vincent Driessen’s branching model!
More Information: https://github.com/nvie/gitflow
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 git-flow

Done!