Litewrite

manifest.json

{
  "update_url": "http://clients2.google.com/service/update2/crx",
  "name": "Litewrite",
  "description": "unobtrusive writing",
  "version": "18",
  "app": {
    "urls": [
      "http://litewrite.net/"
    ],
    "launch": {
      "web_url": "http://litewrite.net/"
    }
  },
  "icons": {
    "16": "icon_x16.png",
    "48": "icon_x48.png",
    "128": "icon_x128.png"
  },
  "manifest_version": 2,
  "offline_enabled": true
}