title: Unexpected usage of event in create-react-app
body: <p>I want to write simple form with create-react-app but i can't because event i can't use event object. The error that i get is 
  ./src/components/Form.js
    Line 14:  Unexpected use of 'event'  no-restricted-globals</p>
  
  <p>It is a problem with newest create-react-app. The code is from react docs.</p>
  
  <pre><code>import React from 'react';
  
  class Form extends React.Component {
    constructor(props) {
      super(props);
      this.state = {value: ''};
    }
  
    handleChange = e =&gt; {
      this.setState({value: e.target.value});
    }
  
    handleSubmit = e =&gt; {
      event.preventDefault();
    }
  
    render() {
      return (
        &lt;form onSubmit={this.handleSubmit}&gt;
          &lt;label&gt;
            Name:
            &lt;input type="text" value={this.state.value} onChange={this.handleChange} /&gt;
          &lt;/label&gt;
          &lt;input type="submit" value="Submit" /&gt;
        &lt;/form&gt;
      );
    }
  }
  
  export default Form;
  </code></pre>