renaming mouseScrolled to mouseWHeel

Author: lauren mccarthy

lib/p5.js

@@ -527,7 +527,7 @@ var p5Element = function (require, core) {
     p5.Element.prototype.mousePressed = function (fxn) {
       attachListener('mousedown', fxn, this);
     };
-    p5.Element.prototype.mouseScrolled = function (fxn) {
+    p5.Element.prototype.mouseWheel = function (fxn) {
       attachListener('mousewheel', fxn, this);
     };
     p5.Element.prototype.mouseReleased = function (fxn) {