Examine source code of Trove Words

{
  "manifest_version": 2,
  "name": "Trove Words",
  "version": "0.0.7resigned1",
  "description": "Look up a word and add it to your Trove!",
  "browser_action": {
    "default_icon": "trove_icon.png",
    "default_title": "Search on Trove"
  },
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "icons": {
    "16": "trove16.png",
    "32": "trove32.png"
  },
  "background": {
    "page": "empty_page.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0cdb1b20-76e4-4fb4-8d4c-02c57ec64989}"
    }
  }
}