Examine source code of Tab Awesome

{
  "name": "Awesome",
  "version": "0.0.0.2",
  "description": "An extension for making your old chrome tab much more interesting",
  "permissions": [
    "storage"
  ],
  "chrome_url_overrides": {
    "newtab": "overpage/index.html"
  },
  "browser_action": {
    "default_title": "A popup will come here",
    "default_icon": {
      "16": "images/LsG.png",
      "32": "images/LsG.png",
      "48": "images/LsG.png",
      "128": "images/LsG.png"
    }
  },
  "manifest_version": 2
}