Add NHamcrest to index.html

Author: CaptnCodr

index.html

@@ -80,6 +80,7 @@ <h2>Matchers that can be combined to create flexible expressions of intent</h2>
     <li><a href="https://www.npmjs.com/package/jshamcrest">JavaScript (JsHamcrest)</a></li>
     <li><a href="https://www.npmjs.com/package/hamjest">JavaScript (Hamjest)</a></li>
     <li><a href="https://github.com/corbym/gocrest">GO (Gocrest)</a></li>
+    <li><a href="https://github.com/nhamcrest/NHamcrest">C# (NHamcrest)</a></li>
    </ul>
 
    <footer>