Quick script to make a folder of 24px SVGs from the downloadable material icons file.

make_material_icon_svg_folder_for_iconjar.sh

#!/bin/sh
#
#  1. Download the file linked here:
#     http://www.google.com/design/spec/resources/sticker-sheets-icons.html#sticker-sheets-icons-components
#
#  2. Run this:
#     ./make_material_icon_svg_folder_for_iconjar.sh material-design-icons-1.0.1
#
DIR="$1"

if [ -z "$DIR" ]; then
  echo "Usage: $0 <unzipped-material-icons-path>" >&2
  exit
fi

OUTDIR="$1-out"
mkdir -p $OUTDIR

FOO=`find $DIR -iname \*.svg | grep 24px | grep production`

for f in $FOO; do
  SECTION=`dirname $f | cut -d'/' -s -f2`
  NAME=`basename $f`
  NAME=${NAME//ic_/}
  NAME=${NAME//_24px.svg/}
  cat $f | sed -e 's/<\/svg>/<rect id="bounds" x="0" y="0" fill="none" width="24" height="24"\/><\/svg>/' > $OUTDIR/${NAME}_${SECTION}.svg
done