Examine source code of WarpDrive-ff

{
  "manifest_version": 2,
  "name": "wd-ff",
  "version": "1.5resigned1",
  "description": "Allows the jumping to custom urls using keywords.",
  "omnibox": {
    "keyword": "wd"
  },
  "applications": {
    "gecko": {
      "id": "krdevmail@gmail.com"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "warp-drive.js"
    ]
  }
}