Examine source code of AMO Editor Timeify

{
  "manifest_version": 2,
  "name": "AMO Editor Timeify",
  "version": "0.3resigned1",
  "icons": {
    "48": "icon48.png"
  },
  "description": "Time how much time you spend reviewing addons",
  "applications": {
    "gecko": {
      "id": "amo-editor-timeify@jetpack",
      "strict_min_version": "45.0"
    }
  },
  "background": {
    "scripts": [
      "common.js",
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png"
    },
    "default_popup": "dashboard.html"
  }
}