title: Custom sort method for column in ReactTable
body: <p>I want to make a custom sort method for a column in my ReactTable. How can I say to ReactTable that it should use my custom sort method instead?</p>
  
  <p>I can not see how I am supposed to use sortMethod property on the column. When I pass this:</p>
  
  <pre><code>sortMethod: (prop1, prop2, prop3) =&gt; console.log(prop1, prop2, prop3); //undefined undefined false
  </code></pre>
  
  <p>So I guess that the <code>prop3</code> says false because it is not desc. However, what about the <code>prop1</code> and <code>prop2</code>? should it not be something? One reason can be that I only have an <code>id</code> on the column, and no <code>accessor</code>?</p>