message: Enable the Chromium sandbox
  According to recently added documentation, `sandbox: true` creates a sandbox 'compatible' renderer process, but doesn't actually enable the sandbox. The command line argument I've added is also required.
  See discussion here:
diff: "author": "Symphony",
  "main": "js/main.js",
  "scripts": {
  - "dev": "npm run browserify-preload && cross-env ELECTRON_DEV=true electron .",
  - "demo": "npm run browserify-preload && cross-env ELECTRON_DEV=true electron . --url=file://$(pwd)/demo/index.html",
  + "dev": "npm run browserify-preload && cross-env ELECTRON_DEV=true electron . --enable-sandbox",
  + "demo": "npm run browserify-preload && cross-env ELECTRON_DEV=true electron . --url=file://$(pwd)/demo/index.html --enable-sandbox",
  "dist-mac": "npm run prebuild && build --mac",
  "dist-win": "npm run prebuild && build --win --x64",
  "dist-win-x86": "npm run prebuild && build --win --ia32",
  