Examine source code of Truman

{
  "name": "__MSG_appName__",
  "version": "0.2.3resigned1",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "images/app-icons/16px-trustafact-blue.png",
    "32": "images/app-icons/32px-trustafact-blue.png",
    "128": "images/app-icons/128px-trustafact-blue.png",
    "256": "images/app-icons/256px-trustafact-blue.png"
  },
  "applications": {
    "gecko": {
      "id": "@trustafact"
    }
  },
  "default_locale": "en",
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "bower_components/lodash/lodash.min.js",
        "bower_components/jquery/dist/jquery.min.js",
        "scripts/content.js"
      ],
      "all_frames": true
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://trumanapp.com/*",
      "*://idt911.trumanapp.com/*",
      "*://manage.trumanapp.com/*",
      "http://0.0.0.0:8080/*"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "images/app-icons/16px-trustafact-blue.png",
      "19": "images/app-icons/19px-trustafact-blue.png",
      "32": "images/app-icons/32px-trustafact-blue.png",
      "38": "images/app-icons/38px-trustafact-blue.png",
      "48": "images/app-icons/48px-trustafact-blue.png",
      "96": "images/app-icons/96px-trustafact-blue.png",
      "128": "images/app-icons/128px-trustafact-blue.png",
      "256": "images/app-icons/256px-trustafact-blue.png"
    },
    "default_title": "Truman Grade",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
    "management",
    "background",
    "alarms",
    "notifications",
    "http://*/*",
    "https://*/*",
    "*://use.typekit.net/*",
    "webRequest",
    "webRequestBlocking",
    "http://*.facebook.com/*"
  ]
}