Examine source code of LearnAwesome

{
  "name": "LearnAwesome",
  "version": "0.2.3",
  "description": "Discover the learning resources from the web, and improve your learning by practicing flashcards.",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Add or search this page on LearnAwesome.org",
    "default_icon": {
      "16": "images/get_started16.png",
      "32": "images/get_started32.png",
      "48": "images/get_started48.png",
      "128": "images/get_started128.png"
    }
  },
  "icons": {
    "16": "images/get_started16.png",
    "32": "images/get_started32.png",
    "48": "images/get_started48.png",
    "128": "images/get_started128.png"
  },
  "permissions": [
    "activeTab",
    "contextMenus"
  ]
}