Examine source code of Twitter Views Count Hider

{
  "manifest_version": 2,
  "name": "feefees_fixer",
  "version": "1.0",
  "description": "Removes the views count from twitter.",
  "icons": {
    "48": "icon/sad_seel.jpg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.twitter.com/*"
      ],
      "js": [
        "feefees_fixer.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d2f50d95-caad-4e7c-9de8-b5afe1908e88}"
    }
  }
}