Add electron-packager as dev dependency + whitespace fix

package.json

@@ -8,6 +8,7 @@
   "license": "GPLv3",
   "devDependencies": {
     "bower": "^1.3.1",
+    "electron-packager": "^6.0.0",
     "http-server": "^0.6.1",
     "jasmine-core": "^2.4.1",
     "jshint": "^2.5.2",
@@ -32,9 +33,9 @@
     "update-webdriver": "webdriver-manager update",
     "preprotractor": "npm run update-webdriver",
     "protractor": "protractor test/protractor-conf.js",
-    "build-electron-windows":  "make -f electron.makefile build-electron-windows",
-    "build-electron-darwin":  "make -f electron.makefile build-electron-darwin",
-    "build-electron-linux":  "make -f electron.makefile build-electron-linux",
+    "build-electron-windows": "make -f electron.makefile build-electron-windows",
+    "build-electron-darwin": "make -f electron.makefile build-electron-darwin",
+    "build-electron-linux": "make -f electron.makefile build-electron-linux",
     "update-index-async": "node -e \"require('shelljs/global'); sed('-i', /\\/\\/@@NG_LOADER_START@@[\\s\\S]*\\/\\/@@NG_LOADER_END@@/, '//@@NG_LOADER_START@@\\n' + cat('app/bower_components/angular-loader/angular-loader.min.js') + '\\n//@@NG_LOADER_END@@', 'app/index-async.html');\""
   }
 }