Omnibang

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Omnibang",
  "description": "Search many sites right from address bar using bangs provided by DuckDuckGo. Click Omnibang icon next to address bar for more info.",
  "version": "1.0.0",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "omnibox": {
    "keyword": "!"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Search several websites right from browser's address bar! Click for more info.",
    "default_icon": {
      "16": "img/omnibang-16.png",
      "32": "img/omnibang-32.png"
    }
  },
  "icons": {
    "16": "img/omnibang-16.png",
    "32": "img/omnibang-32.png",
    "48": "img/omnibang-48.png",
    "128": "img/omnibang-128.png"
  }
}