Examine source code of Hyperplanning Moyennes

{
  "name": "Hyperplanning Moyennes",
  "description": "Calcule les moyennes sur Hyperplanning",
  "version": "1.5resigned1",
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Afficher les moyennes"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{a4429ea0-4437-45a4-aa99-38d3a5c399e4}"
    }
  }
}