Examine source code of Shill Kill

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/",
        "https://twitter.com/*"
      ],
      "run_at": "document_end",
      "js": [
        "assets/js/jquery-2.1.4.min.js",
        "assets/js/underscore-min.js",
        "content/content.js"
      ],
      "css": []
    }
  ],
  "browser_action": {
    "default_icon": "icons/icon-min.png",
    "default_popup": "background/popup.html",
    "default_title": "Kill twitter tweets"
  },
  "name": "Shill Kill",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "background/eventPage.js"
    ],
    "persistent": false
  },
  "description": "Chrome extension that removes tweets that over-shill crytpocurrency cash tags & promote signal groups",
  "version": "1.0.2resigned1",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "applications": {
    "gecko": {
      "id": "fecbnaaggibeopkfociidbjmohfohmhc@chrome-store-foxified-309571601"
    }
  }
}