Updating github fork

github_fork_update.md

1. cd into the forked repository directory that you want to update

    cd repository_dir
   

2. Add a new remote to point to the original repository

    git remote add upstream git://github.com/author/project.git
   

3. Pull the new commits from the original repo

    git fetch upstream
   

4. Merge the upstream commits with the forked local repo

    git merge upstream/master master
   

5. replay your local work on top of the fetched branch

    git rebase upstream/master
   

(or)

Instead of 3, 4 & 5 steps use git pull --rebase