Examine source code of DailyFocus

{
  "manifest_version": 2,
  "name": "My Extension",
  "author": "thasneem",
  "version": "1.0",
  "description": "This is a cool browser extension which manage our daily task",
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f24f9863-1f7b-4e40-bcc3-f96e96f8cb8c}"
    }
  }
}