#!/bin/sh
#
#  Minify .png files using imageoptim.
#
#  Can be installed with NPM. (Note: You must already have the GUI application installed.)
#  npm install -g imageoptim-cli
#

if hash imageoptim; then

  if [ "$1" != '' ] ; then

    for file in $1*.png; do
      echo $file | imageoptim
    done

	else
		imageoptim -d `dirname $0`
	fi

fi