title: Disable warning message for eslint rule not being found
body: <p>I'm working on getting eslint working in my app for the first time. I have it mostly working, but since I've started disabling some of the rules I imported my browser console and command line have started being cluttered up with the same warning.</p>
  
  <p>When I run nodemon, my command line is filled with the same warning.
  <a href="https://i.stack.imgur.com/RuOxk.png" rel="noreferrer"><img src="https://i.stack.imgur.com/RuOxk.png" alt="enter image description here"></a></p>
  
  <p>I also get a similar message in the browser console
  <a href="https://i.stack.imgur.com/zjQf5.png" rel="noreferrer"><img src="https://i.stack.imgur.com/zjQf5.png" alt="enter image description here"></a></p>
  
  <p>My app is functioning as intended and linting is working as well. I was just wondering if there was a way to get rid of these warning messages</p>
  
  <p>Here are some possibly relevant files:</p>
  
  <p>package.json</p>
  
  <pre><code>{
      "name": "server",
      "version": "1.0.0",
      "description": "",
      "main": "index.js",
      "engines": {
          "node": "8.4.0",
          "npm": "5.3.0"
      },
      "scripts": {
          "start": "node index.js",
          "server": "nodemon index.js",
          "client": "npm run start --prefix client",
          "dev": "concurrently \"npm run server\" \"npm run client\"",
          "lint": "eslint ."
      },
      "author": "",
      "license": "ISC",
      "dependencies": {
          "concurrently": "^3.5.0",
          "cookie-session": "^1.3.1",
          "express": "^4.15.4",
          "mongoose": "^4.11.10",
          "nodemon": "^1.12.0",
          "passport": "^0.4.0",
          "passport-google-oauth20": "^1.0.0"
      },
      "devDependencies": {
          "eslint": "^4.9.0",
          "eslint-config-airbnb": "^16.1.0",
          "eslint-plugin-import": "^2.7.0",
          "eslint-plugin-jsx-a11y": "^6.0.2",
          "eslint-plugin-react": "^7.4.0"
      }
  }
  </code></pre>
  
  <p>.eslintrc</p>
  
  <pre><code>{
    "extends": [
      "airbnb"
    ],
    "root": true,
    "rules": {
      "import/prefer-default-export": "off",
      "arrow-parens": ["error", "as-needed"],
      "no-tabs": "off",
      "indent": "off",
      "function-paren-newline": "off",
      "max-len": "off",
      "no-console": "off",
      "react/jsx-filename-extension": "off",
      "react/prop-types": "off",
      "consistent-return": "off",
      "jsx-a11y/anchor-is-valid": "off",
      "jsx-a11y/href-no-hash": "off"
    }
  }
  </code></pre>
  
  <p>.eslintignore</p>
  
  <pre><code>node_modules
  .gitignore
  *.md
  *.json
  config/keys.js
  client/src/registerServiceWorker.js
  </code></pre>
  
  <p>Thank you</p>