Examine source code of Task Organisor

{
  "manifest_version": 2,
  "name": "My Extension",
  "version": "1.0",
  "description": "This is my example extension",
  "icons": {
    "48": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ab16afea-2616-429e-8529-7e6cd39e0748}"
    }
  }
}