Examine source code of Easy Backloggery

{
  "manifest_version": 2,
  "name": "Easy Backloggery",
  "version": "1.0",
  "description": "Add list of games to Backloggery easy with this addon.",
  "icons": {
    "48": "icons/SP_beaten.gif"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/SP_beaten.gif"
    },
    "default_title": "Easy Backloggery"
  },
  "content_scripts": [
    {
      "matches": [
        "*://backloggery.com/newgame.php*"
      ],
      "js": [
        "js/jquery.min.js",
        "js/script.js"
      ]
    }
  ]
}