Examine source code of Code Expert Keybinds

{
  "manifest_version": 2,
  "name": "Code Expert Keybinds",
  "version": "1.1",
  "description": "Runs Code Expert by pressing CTRL+S.",
  "icons": {
    "16": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://expert.ethz.ch/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b91e3f70-2e52-4abb-aaf6-0667f28f8405}"
    }
  }
}