Restore attribution

See #13538.

src/math/MathUtils.js

@@ -1,6 +1,8 @@
 /**
  * @author alteredq / http://alteredqualia.com/
  * @author mrdoob / http://mrdoob.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author thezwap 
  */
 
 var _lut = [];