Examine source code of K3D Viewer

{
  "manifest_version": 2,
  "name": "K3D Viewer",
  "version": "1.0",
  "description": "Open and preview .k3d 3D model files directly in your browser.",
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "K3D Viewer",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/icon-48.png"
  },
  "web_accessible_resources": [
    "viewer.html",
    "viewer.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{42fa10e4-b57b-4935-b8cd-bd8c23bf828a}"
    }
  }
}