Use package:sky imports consistently

sky/sdk/lib/editing/input.dart

Index: sky/sdk/lib/editing/input.dart
diff --git a/sky/sdk/lib/editing/input.dart b/sky/sdk/lib/editing/input.dart
index 639b8bff60fd6410f3358ce99e011d20b7cae9b1..11f3a59b28711d8263c5a6da3e6157236d57453c 100644
--- a/sky/sdk/lib/editing/input.dart
+++ b/sky/sdk/lib/editing/input.dart
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import '../painting/text_style.dart';
-import '../widgets/basic.dart';
-import '../widgets/theme.dart';
-import 'editable_string.dart';
-import 'editable_text.dart';
-import 'keyboard.dart';
+import 'package:sky/editing/editable_string.dart';
+import 'package:sky/editing/editable_text.dart';
+import 'package:sky/mojo/keyboard.dart';
+import 'package:sky/painting/text_style.dart';
+import 'package:sky/widgets/basic.dart';
+import 'package:sky/widgets/theme.dart';
 
 typedef void ValueChanged(value);
 
@@ -80,7 +80,7 @@ class Input extends StatefulComponent {
     }
 
     textChildren.add(new EditableText(
-      value: _editableValue, 
+      value: _editableValue,
       focused: focused,
       style: textStyle,
       cursorColor: cursorColor