Hook post-commit to get a snapshot

gistfile1.sh

#!/bin/sh

# Put this in .git/hooks/post-commit (and chmod 755)
CUR_BRANCH=`git rev-parse --abbrev-ref HEAD` 

# do this awesomeness if current branch is master
if [ "$CUR_BRANCH" == "master" ]; then
  echo "Smile for the camera..."
  MSG=`git log -1 --pretty=format:%s` 
  SNAPSHOT="last_commit.jpg"
  # switch to gh-pages branch
  git checkout gh-pages
  # To take the snapshot use Snappy; download Snappy at https://github.com/pioz/snappy
  snappy -d "FaceTime HD Camera (Built-in)" -m "$MSG" $SNAPSHOT
  convert $SNAPSHOT -resize "800x800>" $SNAPSHOT
  git commit -am "Add commit snapshot"
  git push origin gh-pages
  git checkout master
fi