manifest.json

{
"update_url": "https://clients2.google.com/service/update2/crx",

    "manifest_version": 2,

    "name": "Pro for Trello, FREE Trello tweaks",
    "short_name": "Pro for Trello",
    "description": "Ultimate FREE tweaks for Trello users! Your Trello boards on steroids!",
    "version": "2.0.2",

    "icons": {
        "16": "img/16x16.png",
        "24": "img/24x24.png",
        "32": "img/32x32.png",
        "48": "img/48x48.png",
        "64": "img/64x64.png",
        "128": "img/128x128.png",
        "256": "img/256x256.png",
        "512": "img/512x512.png"
    },

    "permissions": [
        "*://trello.com/*", "tabs", "storage"
    ],

    "web_accessible_resources": [
        "img/*",
        "css/*",
        "tmpl/*",
        "docs/*",
        "lib/*"
    ],

    "background": {
        "scripts": ["js/events.js"],
        "persistent": false
    },

    "content_scripts": [{
        "matches": ["*://trello.com/*"],
        "js": [
            "lib/jquery-3.0.0.min.js",
            "js/config.js",
            "js/trello-pro.js",
            "js/donate.js"
        ],
        "css": [
            "css/trello-pro.css"
        ],
        "run_at": "document_idle",
        "all_frames": true
    }]
}