app.js

Titanium.UI.setBackgroundColor('#000');

var win1 = Titanium.UI.createWindow({
	title:'Window 1',
	backgroundColor:'#fff'
});

var data = [];

var group = Ti.UI.createTableViewSection();

group.add(Ti.UI.createTableViewRow({
	title: 'Row in group 1'
}));
//From tableView guide
group.headerView = Ti.UI.createLabel({
  backgroundColor: "#035385",
  color:"white",
  font:{ fontSize: 16, fontWeight:"bold" },
  text:"Group 1 header",
  textAlign:"center",
  height:35,
  width:320
});

data.push(group);

var group2 = Ti.UI.createTableViewSection();
group2.add(Ti.UI.createTableViewRow({
	title: 'Row in group 2'
}));

group2.headerView = Ti.UI.createLabel({
  backgroundColor: "#035385",
  color:"white",
  font:{ fontSize: 16, fontWeight:"bold" },
  text:"Group 2 header",
  textAlign:"center",
  height:35,
  width:320
});


data.push(group2);

var tableview = Titanium.UI.createTableView({
	data : data
});

win1.add(tableview);

win1.open();