manifest.json

{
    "manifest_version": 2,
    "name": "Remove Vulgar",
    "description": "This plugin is designed to eliminate any vulgar words that may be present. This will assist in keeping a small youngster away from a potentially harmful situation.",
    "version": "1.0.0",
    "icons": {
        "16": "icon.png",
        "48": "icon.png",
        "128": "icon.png"
    },

    "permissions": [
        "tabs",
        "storage"
    ],

    "content_scripts": [
        {
            "matches" : ["<all_urls>"],
            "js": ["script.js"]
        }
    ]
}