National Geographic - Photo of the day

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "National Geographic - Photo of the day",
  "short_name": "Photo of the Day",
  "description": "Top photo every day, one click far",
  "version": "4.4",
  "browser_action": {
    "default_icon": "NatGeo.png",
    "default_popup": "popup.html"
  },
  "backgroud": {
    "scripts": [
      "Main.js"
    ]
  },
  "icons": {
    "16": "NatGeo.png",
    "48": "NatGeo.png",
    "128": "NatGeo.png"
  },
  "permissions": [
    "http://*.nationalgeographic.com/*",
    "tabs"
  ]
}