Examine source code of bookmark at dmaghi

{
  "manifest_version": 2,
  "name": "bookmark at dmaghi",
  "version": "1.1",
  "description": "A simple bookmark button to save urls to your account at dmaghi",
  "homepage_url": "http://dmaghi.com",
  "icons": {
    "48": "icons/bookmark48.png",
    "96": "icons/bookmark96.png"
  },
  "permissions": [
    "bookmarks",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/bookmark96.png",
    "default_title": "Bookmark me to dmaghi"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}