Examine source code of allropewiki

{
  "manifest_version": 2,
  "name": "allropewiki",
  "version": "3.3",
  "description": "load all ropewiki locations",
  "icons": {
    "48": "icons/ico.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.ropewiki.com/*"
      ],
      "js": [
        "allropewiki.js"
      ]
    }
  ]
}