Examine source code of Social Sentiment

{
  "manifest_version": 2,
  "name": "Social Sentiment",
  "version": "1.1resigned1",
  "description": "Adds sentiment analysis to social platforms.",
  "icons": {
    "48": "icons/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://twitter.com/*"
      ],
      "js": [
        "twitter.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7802071c-4efa-414c-9039-ab670353df94}"
    }
  }
}