Examine source code of Enumerate

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "short_name": "__MSG_extensionShortName__",
  "description": "__MSG_extensionDescription__",
  "author": "Brett Zamir",
  "version": "0.1.5resigned1",
  "homepage_url": "https://github.com/brettz9/enumerate/",
  "permissions": [
    "https://www.google.com/*"
  ],
  "omnibox": {
    "keyword": "g"
  },
  "background": {
    "page": "lib/background.html"
  },
  "icons": {
    "128": "icon.png"
  },
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "enumerator@brett-zamir.me"
    }
  }
}