Localhost detector

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 2,
    "name": "Localhost detector",
    "description": "Detects if you are accessing localhost or production and respectively shows prominent red banner only on localhost.",
    "version": "0.3",
    "icons": {
        "128": "icon.png"
    },
    "content_scripts": [
        {
            "js": [
                "jquery.min.js",
                "local.js"
            ],
            "css": [
                "local.css"
            ],
            "matches": [
                "*:\/\/*\/*"
            ],
            "run_at": "document_end"
        }
    ]
}