Electron 9, Fixed breaking changes from 7 and 8.

Fixed file selectors not behaving properly due to breaking change in Electron 7 (#67).
Renamed shell.openItem to shell.openPath (Electron 9 breaking change).

Resolves #67.

index.js

@@ -1,6 +1,5 @@
 // Requirements
-const {app, BrowserWindow, ipcMain} = require('electron')
-const Menu                          = require('electron').Menu
+const { app, BrowserWindow, ipcMain, Menu } = require('electron')
 const autoUpdater                   = require('electron-updater').autoUpdater
 const ejse                          = require('ejs-electron')
 const fs                            = require('fs')