Clean up examples directory

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

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// 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/ink_well.dart';
-import 'package:sky/framework/fn.dart';
-import 'package:sky/framework/theme/typography.dart' as typography;
-import 'stock_arrow.dart';
-import 'stock_data.dart';
-
-class StockRow extends Component {
-  static final Style _style = new Style('''
-    display: flex;
-    align-items: center;
-    border-bottom: 1px solid #F4F4F4;
-    padding-top: 16px;
-    padding-left: 16px;
-    padding-right: 16px;
-    padding-bottom: 20px;'''
-  );
-
-  static final Style _tickerStyle = new Style('''
-    flex: 1;'''
-  );
-
-  static final Style _lastSaleStyle = new Style('''
-    text-align: right;
-    padding-right: 16px;'''
-  );
-
-  static final Style _changeStyle = new Style('''
-    ${typography.black.caption};
-    text-align: right;'''
-  );
-
-  Stock stock;
-
-  StockRow({Stock stock}) : super(key: stock.symbol) {
-    this.stock = stock;
-  }
-
-  Node build() {
-    String lastSale = "\$${stock.lastSale.toStringAsFixed(2)}";
-
-    String changeInPrice = "${stock.percentChange.toStringAsFixed(2)}%";
-    if (stock.percentChange > 0)
-      changeInPrice = "+" + changeInPrice;
-
-    List<Node> children = [
-      new StockArrow(
-        percentChange: stock.percentChange
-      ),
-      new Container(
-        key: 'Ticker',
-        style: _tickerStyle,
-        children: [new Text(stock.symbol)]
-      ),
-      new Container(
-        key: 'LastSale',
-        style: _lastSaleStyle,
-        children: [new Text(lastSale)]
-      ),
-      new Container(
-        key: 'Change',
-        style: _changeStyle,
-        children: [new Text(changeInPrice)]
-      )
-    ];
-
-    return new StyleNode(new InkWell(children: children), _style);
-  }
-}