Go Diagram player for 'Life in 19x19'

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "version": "1.0",
  "name": "Go Diagram player for 'Life in 19x19'",
  "description": "Add a previous and next button to go diagrams on lifein19x19.com",
  "content_scripts": [
    {
      "matches": [
        "http://www.lifein19x19.com/forum/*"
      ],
      "js": [
        "script.js"
      ]
    }
  ]
}