add simple layout demo

doric-Qt/doric/resources/main.qml

@@ -12,19 +12,28 @@ ApplicationWindow {
 
         ListView {
             width: parent.width
-            model: 1
+            model: 2
             delegate: Rectangle {
                 Column {
                     anchors.centerIn: parent
                     Text {
-                        text: {return "Snake.js"}
+                        text: {
+                            switch (index) {
+                                case 0:
+                                    return "SimpleDemo.es5.js"
+                                case 1:
+                                    return "Snake.es5.js"
+                            }
+                        }
                     }
                 }
                 width: parent.width
                 height: 60
                 MouseArea {
                     anchors.fill: parent
-                    onClicked: {demoBridge.navigate(index)}
+                    onClicked: {
+                        demoBridge.navigate(index)
+                    }
                 }
             }
         }

doric-Qt/doric/resources/vlayout.qml

@@ -3,9 +3,5 @@ import QtQuick.Controls 2.5
 
 Flex {
     flexDirection: "column"
-    alignItems: "center"
-    alignSelf: "center"
-    justifyContent: "spaceAround"
-    alignContent: "stretch"
 }