A commit hook to run imageoptim on all images in your assets/ directory

pre-commit.imgoptim

#!/bin/sh
#
# A pre-commit hook that runs Image Optim against all images in the /assets
# directory. Requires you have Image Optim installed and will fail silently if
# you don't have it installed to /Applications/. Image optim will skip any 
# images already optimized but this may take time, especially if you've never
# run it before or have many images. Rename this pre-commit and move to your 
# project's .git/hooks/ directory
# 
# /Applications/ImageOptim.app/Contents/MacOS/ImageOptim *.png
#
# bypass with --no-verify
# 
if test -e /Applications/ImageOptim.app/Contents/MacOS/ImageOptim
	then
	/Applications/ImageOptim.app/Contents/MacOS/ImageOptim assets/
else
	exit 0
fi