title: Preselect configurable product options by simple product URL
body: <p>How to show configurable product with preselected options if requested url is for simple product?</p>
  
  <p><strong><em>For example:</em></strong></p>
  
  <p><em>Simple product #1</em> has:<br />
  <strong>Color:</strong> <code>Red</code><br />
  <strong>URL:</strong> <code>/simple-red.html</code><br /></p>
  
  <p><em>Simple product #2</em> has:<br />
  <strong>Color:</strong> <code>Green</code><br />
  <strong>URL:</strong> <code>/simple-green.html</code><br /></p>
  
  <p><em>Configurable product</em> has:<br />
  <strong>URL:</strong> <code>/config.html</code><br />
  <br /></p>
  
  <p>If user visits <code>/simple-red.html</code> it should be loaded <em>configurable product</em> with pre-selected option <strong>Color:</strong> <code>Red</code></p>
  
  <p>If user visits <code>/simple-green.html</code> it should be loaded <em>configurable product</em> with pre-selected option <strong>Color:</strong> <code>Green</code></p>