manifest.json

{
    "name": "Guild Wars 2 - Achievement Activity",
    "description": "Adds a column to the Guild Wars 2 leaderboards to enable easy activity tracking.",
    "version": "0.12",
    "manifest_version": 2,
    "options_page": "options.html",
    "content_scripts": [
    {
      "matches": ["https://leaderboards.guildwars2.com/*"],
      "js": ["js/jquery-2.1.0.min.js", "js/script.js"],
      "css": ["css/style.css"]
    }],
    "browser_action": {
        "default_title": "GW2 Guild Activity",
        "default_popup": "popup.html",
        "default_icon": {
            "19": "images/icon19.png",
            "38": "images/icon38.png"
        }
    },
    "icons": {
        "16": "images/icon16.png",
        "48": "images/icon48.png",
        "128": "images/icon128.png"
    },
    "permissions": [
        "activeTab",
        "storage"
    ]
}