app won't quit before Ctrl+ Q

lib/config.js

@@ -1,82 +0,0 @@
-const electron = require('electron')
-const app = electron.app
-const ipc = electron.ipcMain
-const jetpack = require('fs-jetpack')
-const nodeIpc = require('@rokt33r/node-ipc')
-
-const defaultConfig = {
-  'editor-font-size': '14',
-  'editor-font-family': 'Monaco, Consolas',
-  'editor-indent-type': 'space',
-  'editor-indent-size': '4',
-  'preview-font-size': '14',
-  'preview-font-family': 'Lato',
-  'switch-preview': 'blur',
-  'disable-direct-write': false,
-  'theme-ui': 'light',
-  'theme-code': 'xcode',
-  'theme-syntax': 'xcode',
-  'preview-line-number': false
-}
-const configFile = 'config.json'
-
-var userDataPath = app.getPath('userData')
-
-function getConfig () {
-  var userDataPath = app.getPath('userData')
-  if (jetpack.cwd(userDataPath).exists(configFile)) {
-    try {
-      return JSON.parse(jetpack.cwd(userDataPath).read(configFile, 'utf-8'))
-    } catch (err) {}
-  }
-  return null
-}
-
-var config = null
-
-function saveConfig () {
-  var content
-  try {
-    content = JSON.stringify(config)
-  } catch (e) {
-    config = {}
-    content = JSON.stringify(config)
-  }
-  jetpack.cwd(userDataPath).file(configFile, { content })
-}
-
-// Init
-config = getConfig()
-if (config == null) {
-  config = Object.assign({}, defaultConfig)
-  saveConfig()
-}
-
-config = Object.assign({}, defaultConfig, config)
-
-if (config['disable-direct-write']) {
-  app.commandLine.appendSwitch('disable-direct-write')
-}
-
-function emitToFinder (type, data) {
-  var payload = {
-    type: type,
-    data: data
-  }
-
-  nodeIpc.server.broadcast('message', payload)
-}
-
-app.on('ready', function () {
-  const mainWindow = require('./main-window')
-  function applyConfig () {
-    mainWindow.webContents.send('config-apply', config)
-    emitToFinder('config-apply', config)
-  }
-
-  ipc.on('configUpdated', function (event, newConfig) {
-    config = Object.assign({}, defaultConfig, config, newConfig)
-    saveConfig()
-    applyConfig()
-  })
-})

lib/main-app.js

@@ -10,7 +10,6 @@ const nodeIpc = require('@rokt33r/node-ipc')
 const GhReleases = require('electron-gh-releases')
 // electron.crashReporter.start()
 
-require('./config')
 var mainWindow = null
 var finderProcess = null
 var finderWindow = null
@@ -273,7 +272,12 @@ app.on('ready', function () {
     mainWindow.setMenu(menu)
   }
   mainWindow.on('close', function (e) {
-    app.quit()
+    if (appQuit) {
+      app.quit()
+    } else {
+      mainWindow.hide()
+      e.preventDefault()
+    }
   })
   switch (process.platform) {
     case 'darwin':