Examine source code of "Cut & Share"-Button from Snipedy

{
  "name": "\"Cut & Share\"-Button from Snipedy",
  "version": "0.1.3",
  "manifest_version": 2,
  "description": "Cut & Share a Snip directly on the web.",
  "icons": {
    "16": "./icons/16cns-icon.png",
    "32": "./icons/32cns-icon.png",
    "48": "./icons/48cns-icon.png",
    "64": "./icons/64cns-icon.png",
    "96": "./icons/96cns-icon.png",
    "128": "./icons/128cns-icon.png"
  },
  "content_scripts": [
    {
      "js": [
        "./js/lib/jquery.min.js",
        "./js/lib/www-widgetapi.js",
        "./js/snipedy-helpers.min.js",
        "./js/snipedy-firefox-ext.min.js"
      ],
      "css": [
        "./css/snipedy-firefox-ext.min.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "./js/background.min.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "./icons/16cns-icon.png",
      "32": "./icons/32cns-icon.png",
      "48": "./icons/48cns-icon.png",
      "64": "./icons/64cns-icon.png",
      "96": "./icons/96cns-icon.png",
      "128": "./icons/128cns-icon.png"
    },
    "default_title": "Cut & Share"
  },
  "permissions": [
    "*://snipedy.com/*",
    "storage",
    "tabs",
    "cookies"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8e6c3c8a-4e4e-41c2-8942-ecb1ad681d84}"
    }
  }
}