Examine source code of TiddlyMark

{
  "manifest_version": 2,
  "name": "TiddlyMark",
  "version": "0.1",
  "description": "Save bookmark to TiddlyWiki",
  "homepage_url": "http://incur.numag.net/tiddlymark",
  "icons": {
    "48": "icons/tiddlymark.png",
    "96": "icons/bookmark-it@2x.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "*://*/*"
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "browser_action": {
    "default_icon": "icons/star-empty-38.png",
    "default_title": "TiddlyMark"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tiddlymark@incur.numag.net",
      "strict_min_version": "42.0"
    }
  },
  "background": {
    "scripts": [
      "tiddlywiki.js",
      "background.js"
    ]
  }
}