Mac DMG creator

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "flasher.js",
+  "name": "Flasher.js",
   "version": "1.0.0",
   "description": "A GUI tool for flashing the Espruino JavaScript runtime on Adafruit Huzzah (ESP8366 based) boards",
   "main": "index.js",
@@ -7,11 +7,13 @@
     "start": "electron index.js",
     "pre-rebuild": "node ./scripts/pre-rebuild.js",
     "rebuild": "electron-rebuild",
-    "sign-mac": "electron-osx-sign out/flasher.js-darwin-x64/flasher.js.app",
-    "pack-win": "electron-packager . flasher.js --asar  --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",
+    "sign-mac": "electron-osx-sign out/Flasher.js-darwin-x64/Flasher.js.app",
+    "pack-win": "electron-packager . Flasher.js --asar  --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 --overwrite --platform=darwin --arch=x64 --icon=resources/icon.icns --prune=true --out=out --osx-sign.identity='Developer ID Application: Secret Monkey Science'",
     "installer-win": "node ./scripts/windows-installer.js",
+    "installer-mac": "electron-installer-dmg --overwrite --out=out/ out/Flasher.js-darwin-x64/Flasher.js.app Flasher.js --icon=resources/icon.icns",
     "dist-windows": "npm run pre-rebuild && npm run rebuild && npm run pack-win && npm run installer-win",
+    "dist-mac": "npm run pack-mac && npm run sign-mac && npm run installer-mac",
     "test": "mocha"
   },
   "repository": {
@@ -48,10 +50,11 @@
   },
   "devDependencies": {
     "chai": "^3.5.0",
+    "electron-installer-dmg": "^0.1.1",
+    "electron-osx-sign": "^0.4.0-beta4",
     "electron-packager": "^7.0.3",
     "electron-prebuilt": "^0.36.9",
     "electron-rebuild": "^1.1.3",
-    "electron-osx-sign": "^0.4.0-beta4",
     "electron-winstaller": "^2.2.0",
     "mocha": "^2.4.5"
   }