scroll bar docs fixes

Author: joshtynjala

source/feathers/controls/ScrollBar.as

@@ -58,11 +58,15 @@ package feathers.controls
 	 * <listing version="3.0">
 	 * list.horizontalScrollBarFactory = function():IScrollBar
 	 * {
-	 *     return new ScrollBar();
+	 *     var scrollBar:ScrollBar = new ScrollBar();
+	 *     scrollBar.direction = ScrollBar.DIRECTION_HORIZONTAL;
+	 *     return scrollBar;
 	 * };
 	 * list.verticalScrollBarFactory = function():IScrollBar
 	 * {
-	 *     return new ScrollBar();
+	 *     var scrollBar:ScrollBar = new ScrollBar();
+	 *     scrollBar.direction = ScrollBar.DIRECTION_VERTICAL;
+	 *     return scrollBar;
 	 * };</listing>
 	 *
 	 * @see http://wiki.starling-framework.org/feathers/scroll-bar

source/feathers/controls/Scroller.as

@@ -642,7 +642,9 @@ package feathers.controls
 		 * <listing version="3.0">
 		 * scroller.horizontalScrollBarFactory = function():IScrollBar
 		 * {
-		 *    return new ScrollBar();
+		 *     var scrollBar:ScrollBar = new ScrollBar();
+		 *     scrollBar.direction = ScrollBar.DIRECTION_HORIZONTAL;
+		 *     return scrollBar;
 		 * };</listing>
 		 *
 		 * @default null
@@ -855,7 +857,9 @@ package feathers.controls
 		 * <listing version="3.0">
 		 * scroller.verticalScrollBarFactory = function():IScrollBar
 		 * {
-		 *    return new ScrollBar();
+		 *     var scrollBar:ScrollBar = new ScrollBar();
+		 *     scrollBar.direction = ScrollBar.DIRECTION_VERTICAL;
+		 *     return scrollBar;
 		 * };</listing>
 		 *
 		 * @default null

source/feathers/controls/SimpleScrollBar.as

@@ -57,11 +57,15 @@ package feathers.controls
 	 * <listing version="3.0">
 	 * list.horizontalScrollBarFactory = function():IScrollBar
 	 * {
-	 *     return new SimpleScrollBar();
+	 *     var scrollBar:SimpleScrollBar = new SimpleScrollBar();
+	 *     scrollBar.direction = SimpleScrollBar.DIRECTION_HORIZONTAL;
+	 *     return scrollBar;
 	 * };
 	 * list.verticalScrollBarFactory = function():IScrollBar
 	 * {
-	 *     return new SimpleScrollBar();
+	 *     var scrollBar:SimpleScrollBar = new SimpleScrollBar();
+	 *     scrollBar.direction = SimpleScrollBar.DIRECTION_VERTICAL;
+	 *     return scrollBar;
 	 * };</listing>
 	 *
 	 * @see http://wiki.starling-framework.org/feathers/simple-scroll-bar