Support for version flag

src/main/index.js

@@ -2,6 +2,14 @@ import { app, BrowserWindow, Menu, ipcMain, screen } from 'electron'
 import { productName } from '../../package.json'
 import Datastore from 'nedb'
 
+if (process.argv.includes('--version')) {
+  console.log(`v${app.getVersion()}`)
+  app.exit(0)
+} else {
+  runApp()
+}
+
+function runApp() {
   require('@electron/remote/main').initialize()
 
   require('electron-context-menu')({
@@ -554,3 +562,4 @@ function setMenu () {
     const menu = Menu.buildFromTemplate(template)
     Menu.setApplicationMenu(menu)
   }
+}