New bundle id

Author: williambout

package.json

@@ -4,7 +4,7 @@
   "main": "./main.js",
   "scripts": {
     "start": "NODE_ENV='development' electron .",
-    "package": "electron-packager . --overwrite --asar --out ./build/ --osx-sign --icon=./app/img/icon.icns --app-version=$npm_package_version && cd build/Paper-darwin-x64 && zip -ryXq9 ../Paper-osx-${npm_package_version}.zip Paper.app"
+    "package": "electron-packager . --overwrite --asar --out ./build/ --app-bundle-id='com.williambout.paper' --osx-sign --icon=./app/img/icon.icns --app-version=$npm_package_version && cd build/Paper-darwin-x64 && zip -ryXq9 ../Paper-osx-${npm_package_version}.zip Paper.app"
   },
   "devDependencies": {
     "electron": "^1.4.15",