Examine source code of UncommonSight

{
  "description": "Allows the user to select a rule file and attempt to decode the current page using plain_sight.",
  "manifest_version": 2,
  "name": "UncommonSight",
  "version": "1.2resigned1",
  "homepage_url": "https://github.com/jwhart175/plain_sight",
  "icons": {
    "48": "icons/plain_sight-48.png"
  },
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "getPage.js"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/plain_sight-32.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "57.0a1",
      "id": "{ae5f111c-1357-4d8c-8b2f-913238514571}"
    }
  }
}