Examine source code of SLEGO helper

{
  "manifest_version": 2,
  "name": "SLEGO helper",
  "version": "2.2resigned1",
  "description": "Helps SLEGO game players on site htp://entropiapartners.com/",
  "icons": {
    "48": "slegohelper.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.entropiapartners.com/SLEGO/?i=*"
      ],
      "js": [
        "slegohelper.js"
      ]
    }
  ],
  "page_action": {
    "default_icon": "slegohelper.png",
    "default_title": "SLEGO helper",
    "default_popup": "pagepopup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8267b627-b6fa-4a28-a733-c29fdb68712c}"
    }
  }
}