Examine source code of Schmackhaft

{
  "manifest_version": 2,
  "name": "Schmackhaft",
  "version": "1.2.1",
  "description": "Bookmark manager reminiscent to del.icio.us",
  "author": "Michel Albert",
  "homepage_url": "https://github.com/exhuma/schmackhaft",
  "icons": {
    "48": "/assets/icon.svg",
    "96": "/assets/icon.svg",
    "128": "/assets/icon.svg"
  },
  "browser_action": {
    "default_title": "Schmackhaft",
    "default_popup": "/src/views/action_button/index.html",
    "default_icon": "/assets/icon.svg"
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "storage",
    "bookmarks"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a4621edc-b7f8-4dda-97de-e184bce99be8}"
    }
  },
  "background": {
    "scripts": [
      "/background.js"
    ]
  },
  "commands": {
    "open-popup": {
      "suggested_key": {
        "default": "Ctrl+Alt+S"
      },
      "description": "Open Schmackhaft Popup"
    }
  }
}