Re-add sprite constructor docs as non-YUIDoc comment block.

lib/p5.play.js

@@ -722,6 +722,16 @@ deltaTime = ((now - then) / 1000)/INTERVAL_60; // seconds since last frame
    * @class Sprite
    */
 
+// For details on why these docs aren't in a YUIDoc comment block, see:
+//
+// https://github.com/molleindustria/p5.play/pull/67
+//
+// @param {Number} x Initial x coordinate
+// @param {Number} y Initial y coordinate
+// @param {Number} width Width of the placeholder rectangle and of the
+//                       collider until an image or new collider are set
+// @param {Number} height Height of the placeholder rectangle and of the
+//                        collider until an image or new collider are set
 function Sprite(pInst, _x, _y, _w, _h) {
   var pInstBind = createPInstBinder(pInst);