Improve Center docs a tiny bit. (flutter#6636)

Hixie · web-flow · commit ae49356a899d · 2016-11-02T11:28:56.000-07:00
diff --git a/packages/flutter/lib/src/widgets/basic.dart b/packages/flutter/lib/src/widgets/basic.dart
@@ -659,7 +659,8 @@ class Align extends SingleChildRenderObjectWidget {
 ///
 /// See also:
 ///
-///  * [Align]
+///  * [Align], which lets you arbitrarily position a child within itself,
+///    rather than just centering it.
 class Center extends Align {
   /// Creates a widget that centers its child.
   Center({ Key key, double widthFactor, double heightFactor, Widget child })
