Add named function snippets

[kylemh]

Without some babel configuration, it's impossible to list prop types at the top of the file when using arrow function components. Many React developers like to use named functions so that prop type definitions can exist at the top of the file - acting as a sort of documentation.

These two snippets will generate the following:

import React from 'react';

function Footer(props) {
  return (
    <div>
      
    </div>
  );
};

export default Footer;

import React from 'react';
import PropTypes from 'prop-types';

Footer.propTypes = {
  
};

function Footer(props) {
  return (
    <div>
      
    </div>
  );
};

export default Footer;