Added link to TWAIN SANE for MacOS X.

sane-frontends.html

@@ -178,6 +178,15 @@
 	  </li>
 	</ul>
       </li>
+      <li>
+	<strong>MacOS X</strong>
+	<ul>
+	  <li>
+	    <a href="http://www.ellert.se/twain-sane/" target="_top">TWAIN SANE Interface for MacOS X</a>:
+	    This is a TWAIN datasource for MacOS X that aquires images using the SANE backend libraries.
+	  </li>
+	</ul>
+      </li>
       <li>
 	<strong>OS/2</strong>
 	<ul>