title: Simple Redux form using react redux
body: <p>In the execution of the below code snippet I'm getting the following error.
  Error: Field must be inside a component decorated with reduxForm()</p>
  
  <p>src/components/LoginForm/index.js</p>
  
  <pre><code>import React, {Component} from 'react';
  import {Field, reduxForm} from 'redux-form';
  
  class LoginForm extends Component {
      render () {
          const {handleSubmit} = this.props;
          return (
              &lt;form onSubmit={handleSubmit}&gt;
                  &lt;Field 
                      name="username"
                      component="input"
                      type="text"
                      placeholder="Username"
                  /&gt;
  
                  &lt;Field 
                      name="password"
                      component="input"
                      type="password"
                      placeholder="Password"
                  /&gt;
                  &lt;button type="submit" label="submit"&gt;Submit&lt;/button&gt;
              &lt;/form&gt;    
          );
      }
  }
  
  export default reduxForm({
      form: 'simpleform'
  })(LoginForm)
  </code></pre>