Examine source code of Price Alert

{
  "manifest_version": 2,
  "name": "Price Alert",
  "description": "Price Alert - Price Tracker for Amazon",
  "version": "1.0.0",
  "author": "Price Alert",
  "permissions": [
    "storage",
    "*://*.amazon.com/*",
    "*://*.getpricealert.com/*"
  ],
  "content_scripts": [
    {
      "css": [
        "main.css"
      ],
      "js": [
        "jquery.js",
        "content.js"
      ],
      "matches": [
        "*://*.amazon.com/*"
      ]
    }
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "icon16.png",
      "38": "icon48.png"
    },
    "default_title": "Price Alert",
    "default_popup": "popup.html"
  }
}