Improve Material ink effects

sky/examples/stocks-fn/lib/stock_row.dart

Index: sky/examples/stocks-fn/lib/stock_row.dart
diff --git a/sky/examples/stocks-fn/lib/stock_row.dart b/sky/examples/stocks-fn/lib/stock_row.dart
index 6f75dee5db7baf04a8e5f99f6df6c66bce5b2e34..94abba7adbe2dd2c4d59c98b04d1502521958bcb 100644
--- a/sky/examples/stocks-fn/lib/stock_row.dart
+++ b/sky/examples/stocks-fn/lib/stock_row.dart
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:sky/framework/components/material.dart';
+import 'package:sky/framework/components/ink_well.dart';
 import 'package:sky/framework/fn.dart';
 import 'package:sky/framework/theme/typography.dart' as typography;
 import 'stock_arrow.dart';
@@ -68,7 +68,7 @@ class StockRow extends Component {
       )
     ];
 
-    return new Material(
+    return new InkWell(
       style: _style,
       children: children
     );