Fix terminal since sky-* moved.

sky/examples/terminal/terminal.sky

 <!--
 // 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 src="/sky/framework/sky-element.sky" />
-<import src="/sky/framework/sky-scrollable.sky" />
+<import src="/sky/framework/elements/sky-element.sky" />
+<import src="/sky/framework/elements/sky-scrollable.sky" />
 <sky-element>
 <template>
   <style>
     #control {
       height: -webkit-fill-available;
       background-color: black;
       color: rgb(255, 191, 0);
       font-family: 'Courier', 'monospace';
     }
     span {
@@ skipping 88 matching lines @@
 
     var completer = new Completer<int>();
     _readerQueue.add(completer);
     return completer.future;
   }
 }
 
 _init(script) => register(script, TerminalDisplayImpl);
 </script>
 </sky-element>