Move doc generator out of frog samples.

utils/dartdoc/interact.dart

Index: utils/dartdoc/interact.dart
diff --git a/frog/docs/interact.dart b/utils/dartdoc/interact.dart
similarity index 60%
rename from frog/docs/interact.dart
rename to utils/dartdoc/interact.dart
index 0255f6d52283447423103b75b65cf1bef5d86fec..98e8560b97d87bcff11e9dbe459302fa197ee361 100644
--- a/frog/docs/interact.dart
+++ b/utils/dartdoc/interact.dart
@@ -1,3 +1,10 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/** Provides client-side behavior for generated docs. */
+#library('interact');
+
 #import('../../client/html/html.dart');
 
 main() {