Examine source code of Sayberyab

{
  "manifest_version": 2,
  "name": "Sayberyab",
  "description": "Find suspicious and unsafe accounts in #Filternet and be more careful about them.",
  "version": "1.0.0",
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": "./images/icon16.png",
    "default_title": "Sayberyab"
  },
  "icons": {
    "16": "./images/icon16.png",
    "32": "./images/icon32.png",
    "48": "./images/icon48.png",
    "128": "./images/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "css": [
        "./styles/content-style.css"
      ],
      "js": [
        "./scripts/content.js"
      ],
      "matches": [
        "https://twitter.com/*"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3b4f4282-08fc-4fbb-b05e-ccd8286ee585}"
    }
  }
}