Update main-app.js

Author: Milo Todt

lib/main-app.js

@@ -3,7 +3,7 @@ const app = electron.app
 const Menu = electron.Menu
 const ipc = electron.ipcMain
 const GhReleases = require('electron-gh-releases')
-const isDev = 'ELECTRON_IS_DEV' in process.env && process.env.NODE_ENV !== 'production'
+const isDev = process.env.NODE_ENV !== 'production'
 // electron.crashReporter.start()
 var ipcServer = null