content: import React from 'react'
  
  export default class extends React.Component {
    static propTypes = {
      displayText: React.PropTypes.string,
      emailAddress: React.PropTypes.string.isRequired
    }
  
    render () {
      return (<a href={'mailto:' + this.props.emailAddress}>{this.props.displayText || this.props.emailAddress}</a>)
    }
  }
  