Update to Electron v1.7.4

npm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "electron",
-  "version": "1.7.3",
+  "version": "1.7.4",
   "description": "Install prebuilt electron binaries for the command-line using npm",
   "repository": "https://github.com/electron-userland/electron-prebuilt",
   "scripts": {