Examine source code of The Positivity Game

{
  "manifest_version": 2,
  "name": "The Positivity Game",
  "version": "0.0.0.3resigned1",
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_title": "The Positivity Game",
    "default_popup": "popup/main.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*",
        "*://*.youtube.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "icons": {
    "48": "icons/icon.png"
  },
  "permissions": [
    "storage",
    "notifications"
  ],
  "description": "Spreading positivity across the web.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{89681198-5b6a-4abc-8847-b8dcff39040a}"
    }
  }
}