Examine source code of Steemoji

{
  "manifest_version": 2,
  "name": "Steemoji",
  "version": "1.1resigned1",
  "description": "Adds emojis for Steemit MarkDown.",
  "content_scripts": [
    {
      "matches": [
        "*://*.steemit.com/*"
      ],
      "js": [
        "jquery.js",
        "steemoji.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{53fe24a4-1185-4686-80c4-936a343bcb30}"
    }
  }
}