Examine source code of Revue

{
  "name": "Revue",
  "description": "Revue",
  "version": "0.1",
  "manifest_version": 2,
  "icons": {
    "16": "images/icon16_active.png",
    "48": "images/icon48_active.png",
    "128": "images/icon128_active.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    },
    "default_title": "Revue",
    "default_popup": "./index.html"
  },
  "permissions": [
    "contextMenus",
    "cookies",
    "activeTab",
    "http://localhost:3000/",
    "http://www.getrevue.co/",
    "https://www.getrevue.co/"
  ],
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'"
}