Examine source code of Kami for Document Editing

{
  "manifest_version": 2,
  "name": "Kami for Document Editing",
  "version": "1.0",
  "description": "Quick access to Kami's PDF and document editing tools.",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_popup": "popup.html",
    "default_title": "Kami for Document Editing"
  },
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4c9f93a7-1a5e-4e42-8b8d-cec1e1c5df91}"
    }
  }
}