manifest.json

{
    "name": "Library Detector",
    "version": "1.0",
    "description": "Detects the Javascript library running on a page and displays it's icon in the address bar.",
    "icons": {
        "48": "icon_48.png",
        "128": "icon_128.png"
    },
    "background_page": "background.html",
    "page_action": {
        "default_icon": "icons/null.png",
        "default_title": "Library Detector"
    },
    "permissions": [
        "tabs",
        "http://*/*",
        "https://*/*"
    ],
    "content_scripts": [
        {
            "matches": ["http://*/*", "https://*/*"],
            "js": ["inject.js"],
            "run_at": "document_end"
        },
        {
            "matches": ["http://*/*", "https://*/*"],
            "js": ["detect.js"],
            "run_at": "document_idle"
        }
    ]
}