RegExr

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "RegExr",
  "version": "2.0",
  "description": "Create & Test Regular Expressions.",
  "icons": {
    "128": "icon_128.png"
  },
  "app": {
    "urls": [],
    "launch": {
      "web_url": "http://www.regexr.com"
    }
  },
  "permissions": [],
  "author": "gskinner.com"
}