content: import React, { Component } from 'react';
  
  import './header.scss';
  
  export default class Header extends Component {
    render() {
      let subtitleContainer = null;
  
      if (this.props.subtitle) {
        subtitleContainer =
          <small>{this.props.subtitle}</small>
      }
  
      return (
        <div className='col-md-12'>
          <header className='page-header ndj-page-header'>
            <h1>{this.props.title}{subtitleContainer}</h1>
          </header>
        </div>
      );
    }
  }
  
  Header.propTypes = {
    title: React.PropTypes.string.isRequired,
    subtitle: React.PropTypes.string
  }