Keep GitHub pages synced with 'master'

post-commit

#!/usr/bin/env sh

if [ $(git symbolic-ref HEAD 2> /dev/null) = "refs/heads/master" ]
then
  git checkout gh-pages
  git merge master
  git checkout master
fi

I have a CoffeeScript game project that uses a simple index.html file to run the app. I use GitHub pages as a demo for the app, therefore I always want my gh-pages branch in-sync with master. This is my post-commit hook to make it happen.