Examine source code of Teaful DevTools

{
  "version": "0.1.1",
  "author": "Aral Roca",
  "name": "Teaful DevTools",
  "short_name": "Teaful DevTools",
  "description": "Teaful DevTools is for debugging application's state changes using Teaful as React state management",
  "homepage_url": "https://github.com/teafuljs/teaful-devtools",
  "manifest_version": 2,
  "icons": {
    "16": "img/logo_16x16.png",
    "48": "img/logo_48x48.png",
    "128": "img/logo_128x128.png"
  },
  "devtools_page": "devtools.html",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_globs": [
        "https://www.google*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{48b0c987-7ae6-447f-8a8d-b2231f2b25a7}"
    }
  }
}