BUILD_FOR_MAC script now builds a DMG too

BUILD_FOR_MAC.command

@@ -8,6 +8,7 @@ cd "`dirname "$0"`"
 
 # Clean
 rm -rf Inky-darwin-x64/
+rm ReleaseUpload/Inky_mac.dmg
 
 # Ensure it's correctly/fully installed first
 ( cd app && npm install )
@@ -18,5 +19,11 @@ rm -rf Inky-darwin-x64/
 # Mac
 electron-packager app Inky --platform=darwin --arch=x64 --icon=resources/Icon.icns --extend-info=resources/info.plist --app-bundle-id=com.inkle.inky --prune --asar.unpackDir="main-process/ink" --ignore="inklecate_win.exe"
 
+# Create a DMG
+# Requires appdmg: npm install -g appdmg
+# https://www.npmjs.com/package/appdmg
+mkdir -p ReleaseUpload
+appdmg resources/appdmg.json ReleaseUpload/Inky_mac.dmg
+
 # Remove .icns again
 rm resources/Icon.icns