Examine source code of Meme Generator

{
  "manifest_version": 2,
  "name": "Meme Generator",
  "version": "1.0",
  "description": "Quickly create memes from a popup.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e6e2dd3a-31fe-4f57-a21f-db319dde9c1b}"
    }
  }
}