Added Internet Archive mirror link for Matej Horvat's NSM

Author: morgant

index.html

@@ -197,6 +197,7 @@ <h2 id="tools">Development Tools</h2>
 					<li>Author: <a href="http://matejhorvat.si/en/">Matej Horvat</a></li>
 					<li>Platform: DOS, Haiku, Mac OS X, OS/2, Windows</li>
 					<li>License: Freeware</li>
+					<li>Mirror: <a href="https://web.archive.org/web/20190415082717/http://matejhorvat.si/en/software/nsm/">Internet Archive</a></li>
 				</ul>
 			</dd>