Examine source code of One-Liners

{
  "manifest_version": 2,
  "name": "One-Liners",
  "version": "0.82resigned1",
  "description": "Get a daily wallpaper and funny one liner on new tab.",
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "96": "img/icon96.png"
  },
  "options_ui": {
    "page": "credits.html"
  },
  "permissions": [
    "management"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f9ebc410-4ca0-471a-898e-a005b2d19013}"
    }
  }
}