added MapperUGen to ecosystem

Author: badebold

ecosystem/language_bindings.html

@@ -51,6 +51,7 @@ <h3>Language and Environment Bindings</h3>
 
           <ul>
             <li><a href="https://github.com/malloch/mapper-max-pd">External objects for Max/MSP and Pure Data.</a></li>
+            <li><a href="https://github.com/libmapper/MapperUGen">MapperUGen, a SuperCollider UGen for libmapper.</a></li>
             <li><a href="https://github.com/mzadel/libmapper-sc">SuperCollider bindings for libmapper.</a></li>
           </ul>