title: How to identify source of React.createClass warning? React v15.6
body: <p>How can I identify the dependency that is causing the warning? </p>
  
  <pre><code>Warning: Accessing createClass via the main React package is deprecated, and will be removed in React v16.0....
  </code></pre>
  
  <p>I understand the changes that are coming with React v16.0. I want to help the dependency resolve the warnings but I don't know who needs help.</p>
  
  <p>Package.json</p>
  
  <pre><code>"dependencies": {
      "autosuggest-highlight": "^3.1.0",
      "material-ui": "next",
      "material-ui-icons": "^1.0.0-alpha.19",
      "nuka-carousel": "^2.2.1",
      "react": "^15.6.1",
      "react-autosuggest": "^9.3.2",
      "react-dom": "^15.6.1",
      "react-helmet": "^5.1.3",
      "react-router-dom": "^4.1.2",
      "react-tap-event-plugin": "^2.0.1",
      "typeface-roboto": "^0.0.35"
    },
    "devDependencies": {
      "enzyme": "^2.9.1",
      "jest-enzyme": "^3.6.1",
      "react-scripts": "^1.0.10",
      "react-test-renderer": "^15.6.1"
    },
  </code></pre>