Examine source code of RedditShowNSFW

{
  "manifest_version": 2,
  "name": "RedditShowNSFW",
  "version": "1.0",
  "description": "Displays nsfw posts",
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "unhide.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{06d70633-76b6-41e5-92cc-7c1dca3511bd}"
    }
  }
}