Examine source code of Popup Memo

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "0.2",
  "default_locale": "en",
  "author": "痛ったい",
  "icons": {
    "16": "icons/popup-memo16.png",
    "32": "icons/popup-memo32.png",
    "64": "icons/popup-memo64.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/popup-memo16.png",
      "32": "icons/popup-memo32.png",
      "64": "icons/popup-memo64.png"
    },
    "default_title": "Memo",
    "default_popup": "memo.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ]
}