Examine source code of StockFinder

{
  "manifest_version": 2,
  "name": "StockFinder",
  "version": "1.0.0",
  "description": "Adds a shortcut to quickly go to stock's info page",
  "permissions": [
    "contextMenus",
    "storage"
  ],
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_popup": "option_page.html",
    "default_icon": {
      "16": "icons/icon.png",
      "32": "icons/icon.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}