Examine source code of Omnify

{
  "manifest_version": 2,
  "name": "Omnify",
  "version": "1.1resigned1",
  "default_locale": "en",
  "description": "Add custom commands/actions to the navigation/omnibox, for example type: omni wikipedia firefox.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "storage"
  ],
  "omnibox": {
    "keyword": "omni"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{99eb18c0-710d-4913-b2d5-03465338fc03}"
    }
  }
}