Do the harlem shake

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Do the harlem shake",
    "description": "Make the current page do the harlem shake",
    "author": "Jamie Davies",
    "homepage_url": "http:\/\/twitter.com\/viralpickaxe",
    "offline_enabled": false,
    "version": "1.0",
    "permissions": [
        "activeTab"
    ],
    "background": {
        "scripts": [
            "background.js"
        ],
        "persistent": false
    },
    "content_scripts": [
        {
            "matches": [
                "http:\/\/*\/*",
                "https:\/\/*\/*"
            ],
            "js": [
                "content.js"
            ],
            "run_at": "document_end"
        }
    ],
    "icons": {
        "16": "icon16.png",
        "48": "icon48.png",
        "128": "icon128.png"
    },
    "browser_action": {
        "default_title": "Do the harlem shake!",
        "default_icon": {
            "19": "icon19.png",
            "38": "icon38.png"
        }
    },
    "manifest_version": 2
}