Creates a OSX installation DMG from a JAR file, with an icon :D

build.sh

NAME="Payload"

# Setup
mkdir build
cd build
echo "Main-Class: $NAME" > payload.txt
jar cmf payload.txt payload.jar

# Icon
curl --remote-name https://developer.apple.com/library/mac/documentation/UserExperience/Conceptual/OSXHIGuidelines/Art/QuickTimePlayerX_2x.png
mkdir payload.iconset
sips -z 128 128 QuickTimePlayerX_2x.png --out payload.iconset/icon_128x128.png
iconutil --convert icns payload.iconset

mkdir -p package/macosx
cp payload.icns package/macosx
jdk=$(/usr/libexec/java_home)
$jdk/bin/javapackager -version
$jdk/bin/javapackager -deploy -native dmg -srcfiles payload.jar -appclass $NAME -name $NAME -outdir deploy -outfile $NAME -v
cp deploy/bundles/$NAME-1.0.dmg $NAME.dmg