Examine source code of Get Used to Bitcoin

{
  "name": "Get Used to Bitcoin",
  "version": "1.10",
  "description": "Real-time bitcoin conversion extension.",
  "browser_action": {
    "default_icon": "disabled.png",
    "default_title": "Click to convert prices on this web-page to bitcoin"
  },
  "background": {
    "page": "background.html",
    "persistent": true
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "icons": {
    "96": "icon.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false,
    "chrome_style": true
  },
  "web_accessible_resources": [
    "javascript/helpers.js"
  ],
  "offline_enabled": false,
  "manifest_version": 2
}