Google Calendar: Add AND remove calendars

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Google Calendar: Add AND remove calendars",
    "description": "Chrome extension to turn the \"Add a coworker's calendar\" field in Google Calendar into a toggle for adding AND removing calendars.",
    "version": "0.1",
    "content_scripts": [
        {
            "matches": [
                "https:\/\/www.google.com\/calendar\/*",
                "http:\/\/www.google.com\/calendar\/*"
            ],
            "js": [
                "node_modules\/email-addresses\/lib\/email-addresses.js",
                "node_modules\/underscore\/underscore.js",
                "index.js"
            ],
            "run_at": "document_end"
        }
    ],
    "permissions": [
        "https:\/\/www.google.com\/calendar\/*"
    ],
    "icons": {
        "128": "icon128.png"
    },
    "manifest_version": 2
}