Move material Input component into sky/framework

sky/framework/editing/editable_text.dart

Index: sky/framework/editing/editable_text.dart
diff --git a/sky/examples/editor/editable_text.dart b/sky/framework/editing/editable_text.dart
similarity index 96%
rename from sky/examples/editor/editable_text.dart
rename to sky/framework/editing/editable_text.dart
index d752972f1f1194526c40eb4c1094e5aaa16266b8..7ad78a93e8957bbdd46012d5c0e3738ca3f1d9ac 100644
--- a/sky/examples/editor/editable_text.dart
+++ b/sky/framework/editing/editable_text.dart
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import '../../framework/fn.dart';
-import '../../framework/theme/colors.dart';
+import '../fn.dart';
+import '../theme/colors.dart';
 import 'dart:async';
 import 'editable_string.dart';