title: HtmlAgilityPack XPath case ignoring
body: <p>When I use </p>
  
  <pre><code>SelectSingleNode("//meta[@name='keywords']")
  </code></pre>
  
  <p>it doesn't work, but when I use the same case that used in original document it works good:</p>
  
  <pre><code>SelectSingleNode("//meta[@name='Keywords']")
  </code></pre>
  
  <p>So the question is how can I set case ignoring?</p>