Fixes #1: Add electron sample

sample-electron/main.js

@@ -0,0 +1,28 @@
+const electron = require('electron')
+const app = electron.app
+const BrowserWindow = electron.BrowserWindow
+
+let mainWindow;
+
+function createWindow () {
+	mainWindow = new BrowserWindow({width: 800, height: 600})
+	mainWindow.loadURL(`file://${__dirname}/index.html`)
+	mainWindow.webContents.openDevTools()
+	mainWindow.on('closed', function () {
+		mainWindow = null
+	})
+}
+
+app.on('ready', createWindow)
+
+app.on('window-all-closed', function () {
+	if (process.platform !== 'darwin') {
+		app.quit()
+	}
+})
+
+app.on('activate', function () {
+	if (mainWindow === null) {
+		createWindow()
+	}
+})