move ipc server to main process

lib/main-app.js

@@ -8,7 +8,7 @@ const ChildProcess = require('child_process')
 const _ = require('lodash')
 const GhReleases = require('electron-gh-releases')
 // electron.crashReporter.start()
-require('./ipc')
+var ipcServer = null
 
 var mainWindow = null
 var finderWindow = null
@@ -112,8 +112,8 @@ app.on('ready', function () {
   }, 1000 * 60 * 60)
 
   checkUpdate()
-
-  require('./hotkey')
+  ipcServer = require('./ipcServer')
+  ipcServer.server.start()
 })
 
 module.exports = app