initial commit of webpage_recorder,only load test url

+node_modules/
+package-lock.json

+const {app, BrowserWindow} = require('electron')
+
+app.disableHardwareAcceleration()
+
+let win
+app.once('ready', () => {
+  win = new BrowserWindow({
+    webPreferences: {
+      offscreen: true
+    }
+  })
+  win.loadURL('http://github.com')
+
+  var now = Date.now()
+  
+  win.webContents.on("paint", function(event, dirty, image){
+  console.log(
+    "painting", 
+    Date.now() - now, 
+    win.webContents.isOffscreen(), 
+    win.webContents.getFrameRate()
+  )
+
+  now = Date.now()
+  })
+  win.webContents.setFrameRate(20)
+})

+{
+  "name": "webpage_recorder",
+  "version": "1.0.0",
+  "description": "render web page offline and record to media file",
+  "main": "main.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [
+    "render",
+    "record",
+    "offline"
+  ],
+  "author": "hubin",
+  "license": "MIT",
+  "dependencies": {
+    "electron": "^1.6.11"
+  },
+  "devDependencies": {
+    "electron-packager": "^8.7.2"
+  }
+}