Double ripple on touch devices with delegated click about waves

[fians]

Sorry, I think I forgot to mention you before that I have this problem earlier #44, and then I solved it by adding exclusion using if statement.

if (touch) {
   // attach touch event
} else {
   // attach click event
}

[hoxxep]

The problem is that some touch screen windows laptops will also have a mouse, so if we don't bind the mouse up event then mouse clicks won't initiate waves on those devices? We'll probably need a way of temporarily disabling waves for mouseup events if a touch event has occurred in the last 500ms or so.

[fians]

It seems if the double ripple problem disappear if I disable event temporary.

[hoxxep]

Fixed this issue by adding a TouchHandler which stacks clicks and disables mousedown for 500ms when a touchstart event occurs (doesn't affect the listeners so there's no performance loss with adding/removing listeners). On the train right now so I don't have Internet on the laptop, but I'll push the change later tonight :)