[TIMOB-15692] TiAPI: removeAllChildren method for view

var win = Ti.UI.createWindow({ backgroundColor: '#fff' });
var scrollView = Ti.UI.createScrollView({height:200,top:0});
win.add(scrollView);

var view1 = Ti.UI.createView({
	backgroundColor:'pink',
	zIndex:10,
	width:200,
	height:30,
	top:10,
	left:10
});

var view2 = Ti.UI.createView({
	backgroundColor:'blue',
	zIndex:11,
	width:200,
	height:30,
	top:15,
	left:15
});

var view3 = Ti.UI.createView({
	backgroundColor:'red',
	zIndex:12,
	width:200,
	height:30,
	top:20,
	left:20
});

scrollView.add(view3);
scrollView.add(view2);
scrollView.add(view1);

var l = Ti.UI.createLabel({
	text:'scroll view: red on top, blue in the middle, pink below',
	color:'#777',
	width:300,
	height:20,
	top:50,
	left:10,
	font:{fontSize:12}
});
scrollView.add(l);

var buttonAdd = Ti.UI.createButton({
	title: 'Add',
	top: 10,
	width: 200,
	height: 30
});

buttonAdd.addEventListener('click', function(){
	scrollView.add(view3);
	scrollView.add(view2);
	scrollView.add(view1);
	scrollView.add(l);
});
win.add(buttonAdd);

var buttonRemove = Ti.UI.createButton({
	title: 'RemoveAll',
	bottom: 10,
	width: 200,
	height: 30
});

buttonRemove.addEventListener('click', function(){
	scrollView.removeAllChildren();
});
win.add(buttonRemove);
win.open();