Keep Fork Up To Date

1. Clone your fork:

    git clone git@github.com:YOUR-USERNAME/YOUR-FORKED-REPO.git
   

2. Add remote from original repository in your forked repository:

    cd into/cloned/fork-repo  
    git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/  REPO-YOU-FORKED-FROM.git
    git fetch upstream
   

3. Updating your fork from original repo to keep up with their changes:

    git pull upstream master