Use path dependencies for Playfair

examples/fitness/pubspec.yaml

 name: fitness
 dependencies:
-  # TODO(abarth): Move playfair into flutter.git
-  # playfair: ^0.0.10
   path: ^1.3.6
-
   flutter:
     path: ../../packages/flutter
+  playfair:
+    path: ../../packages/playfair

packages/playfair/README.md

 # playfair
-[![Build Status](https://travis-ci.org/flutter/playfair.svg?branch=master)](https://travis-ci.org/flutter/playfair)
-[![Coverage Status](https://coveralls.io/repos/domokit/playfair/badge.svg?branch=master)](https://coveralls.io/r/domokit/playfair?branch=master)
 
-A simple charting library for Sky.
+A simple charting library for Flutter.

packages/playfair/pubspec.yaml

@@ -2,11 +2,14 @@ name: playfair
 description: A simple charting library for Flutter
 version: 0.0.10
 author: Flutter Authors <flutter-dev@googlegroups.com>
-homepage: https://github.com/flutter/playfair
+homepage: https://github.com/flutter/flutter/tree/master/packages/playfair
+
 dependencies:
-  flutter: ">=0.0.3 <0.1.0"
+  flutter:
+    path: ../flutter
+
 dev_dependencies:
-  sky_tools: any
-  test: ^0.12.0
+  test: '>=0.12.0 <0.13.0'
+
 environment:
-  sdk: '>=1.8.0 <2.0.0'
+  sdk: '>=1.12.0 <2.0.0'

packages/playfair/test/playfair_test.dart

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-library playfair.test;
-
 import 'package:test/test.dart';
 
 import 'package:playfair/playfair.dart';