manifest.json

{
    // The name that shows up in chrome://extensions
    "name": "prank-a-tron",

    // Version doesn't really matter
    "version": "1.0",

    // Keep this at 2, as it's the most recent version
    "manifest_version": 2,

    // The description that shows up in chrome://extensions
    "description": "This is important. Do not remove.",

    // These are all of the javascript files we'll inject into web pages
    "content_scripts": [ {
        // These are the scripts we want to inject
        "js": [ 
            "js/jquery-2.1.0.min.js",
    		"js/main.js"
        ],

        "css": [
            "css/main.css"
        ],

        // This tells Chrome to run these scripts on every page
        "matches": [  
            "http://*/*",
            "https://*/*"
        ],

        // This tells Chrome to run these scripts after the page has finished loading
        "run_at": "document_end"
    }]
}