Who knows :)

appdmg.json

@@ -0,0 +1,20 @@
+{
+  "title": "Flasher.js",
+  "contents": [
+    {
+      "x": 448,
+      "y": 344,
+      "type": "link",
+      "path": "/Applications"
+    },
+    {
+      "x": 192,
+      "y": 344,
+      "type": "file",
+      "path": "/Users/andrew/Projects/flasher.js/out/flasher.js-darwin-x64/flasher.js.app"
+    }
+  ],
+  "icon": "/Users/andrew/Projects/flasher.js/resources/icon.icns",
+  "icon-size": 80,
+  "background": "/Users/andrew/Projects/flasher.js/resources/drag_to_install.png"
+}

package.json

@@ -11,18 +11,18 @@
     "rebuild": "electron-rebuild",
 
     "pack-windows": "electron-packager . --asar --asar-unpack=protocol-link.html --overwrite --platform=win32 --arch=x64 --icon=resources/icon.ico --prune=true --out=out --version-string.CompanyName=ThingsSDK --version-string.FileDescription=Flasher.js --version-string.ProductName=Flasher.js",
-    "pack-mac": "electron-packager . --asar --asar-unpack=protocol-link.html --overwrite --platform=darwin --arch=x64 --icon=resources/icon.icns --prune=true --out=out --osx-sign.identity='Developer ID Application: Secret Monkey Science'",
+    "pack-mac": "electron-packager . Flasher.js --asar --asar-unpack=protocol-link.html --overwrite --platform=darwin --arch=x64 --icon=resources/icon.icns --prune=true --out=out --osx-sign.identity='Developer ID Application: Secret Monkey Science'",
     "pack-linux": "electron-packager . --asar --asar-unpack=protocol-link.html --overwrite --platform=linux --arch=x64 --icon=resources/png/icon64.png --prune=true --out=out",
 
     "sign-mac": "electron-osx-sign out/Flasher.js-darwin-x64/Flasher.js.app",
 
     "installer-windows": "node ./scripts/windows-installer.js",
-    "installer-mac": "electron-installer-dmg --overwrite --out=out/installers/ out/Flasher.js-darwin-x64/Flasher.js.app Flasher.js --icon=resources/icon.icns",
+    "installer-mac": "electron-installer-dmg --overwrite --out=out/ out/Flasher.js-darwin-x64/Flasher.js.app Flasher.js --icon=resources/icon.icns --background=resources/drag_to_install.png",
     "installer-linux": "electron-installer-debian --src out/flasher.js-linux-x64/ --arch amd64 --config linux-config.json",
 
     "dist-windows": "npm run pre-rebuild && npm run rebuild && npm run pack-windows && npm run installer-windows",
     "dist-linux": "npm run pre-rebuild && npm run rebuild && npm run pack-linux && npm run installer-linux",
-    "dist-mac": "npm run pack-mac && npm run sign-mac && npm run installer-mac"
+    "dist-mac": "npm run pre-rebuild && npm run rebuild && npm run pack-mac && npm run sign-mac && npm run installer-mac"
   },
   "repository": {
     "type": "git",