title: react-table add edit/delete column
body: <p>I use Rails and React-Table to display tables. It works fine so far. But How can one add an edit/delete column to the React-Table?</p>
  
  <p>Is it even possible?</p>
  
  <pre><code>return (
      &lt;ReactTable
        data={this.props.working_hours}
        columns={columns}
        defaultPageSize={50}
        className="-striped -highlight"
      /&gt;
      )
  </code></pre>