touchEvent for iOS events

###Methods:

• onSwipeLeft : function()
• onSwipeRight : function()
• onSwipeUp : function()
• onSwipeDown : function()
• onGestureEnd : function()
• onPinchOpen : function(scale)
• onPinchClose : function(scale)
• onRotated : function(rotation)
• onGesture : function(e)

###Usage: <script type="text/javascript" src="../src/touchEvent.js"></script>

var event = new touchEvent("body");
event.onGesture(function(e){
	//do something;
});