Examine source code of Misie

{
  "manifest_version": 2,
  "name": "Misie",
  "description": "Uwaga! Misie patrzą",
  "version": "1.0.1",
  "author": "Kamil Mikołajczuk",
  "homepage_url": "https://github.com/MikolajczukKamil/misie",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "core/js/content.js"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "core/js/background.js"
    ]
  },
  "browser_action": {
    "default_title": "Misie",
    "default_popup": "core/popup/index.html"
  },
  "icons": {
    "128": "core/img/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{12827860-24e8-45e6-b32a-99261fc3397f}"
    }
  }
}