Examine source code of Hide my Reddit username

{
  "manifest_version": 2,
  "name": "Hide my Reddit username",
  "version": "0.2",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "icons": {
    "48": "snoo_head.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.reddit.com/*"
      ],
      "css": [
        "hide-reddit-username.css"
      ],
      "js": [
        "hide-reddit-username.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5d43bdf2-5155-463c-8635-325178b7b199}"
    }
  }
}