Examine source code of Quicklypick

{
  "browser_action": {
    "default_icon": "img/icon_128.png",
    "default_popup": "html/popup.html",
    "default_title": "Quicklypick"
  },
  "description": "Quicklypick A Personal Blog",
  "icons": {
    "16": "img/icon_16.png",
    "128": "img/icon_128.png"
  },
  "manifest_version": 2,
  "name": "Quicklypick",
  "version": "1.8",
  "browser_specific_settings": {
    "gecko": {
      "id": "{7d204e54-868d-40d3-bdc3-6cba39191f15}"
    }
  }
}