Prepare release of package_config 2.0.0.
diff --git a/pkgs/package_config/README.md b/pkgs/package_config/README.md
index 9ab7f38..073a1c7 100644
--- a/pkgs/package_config/README.md
+++ b/pkgs/package_config/README.md
@@ -3,8 +3,9 @@
 Support for working with **Package Configuration** files as described
 in the Package Configuration v2 [design document](https://github.com/dart-lang/language/blob/master/accepted/future-releases/language-versioning/package-config-file-v2.md).
 
-This package is also available as `package_config_2`, which can be used by packages
-which transitively depend on a version of package_config with a version <2.0.0.
+This version of the `package_config` package is also available as `package_config_2`,
+which can be used by packages which transitively depend on a version of `package_config`
+with a version <2.0.0.
 
 [![Build Status](https://travis-ci.org/dart-lang/package_config.svg?branch=master)](https://travis-ci.org/dart-lang/package_config) [![pub package](https://img.shields.io/pub/v/package_config.svg)](https://pub.dartlang.org/packages/package_config) 
 
diff --git a/pkgs/package_config/test/discovery_test.dart b/pkgs/package_config/test/discovery_test.dart
index 4dd1504..3256187 100644
--- a/pkgs/package_config/test/discovery_test.dart
+++ b/pkgs/package_config/test/discovery_test.dart
@@ -6,7 +6,7 @@
 
 import "dart:io";
 import "package:test/test.dart";
-import "package:package_config_2/package_config.dart";
+import "package:package_config/package_config.dart";
 
 import "src/util.dart";
 
diff --git a/pkgs/package_config/test/discovery_uri_test.dart b/pkgs/package_config/test/discovery_uri_test.dart
index 9558f58..8ad428a 100644
--- a/pkgs/package_config/test/discovery_uri_test.dart
+++ b/pkgs/package_config/test/discovery_uri_test.dart
@@ -5,7 +5,7 @@
 library package_config.discovery_test;
 
 import "package:test/test.dart";
-import "package:package_config_2/package_config.dart";
+import "package:package_config/package_config.dart";
 
 import "src/util.dart";
 
diff --git a/pkgs/package_config/test/parse_test.dart b/pkgs/package_config/test/parse_test.dart
index a07ef1d..3d1a20e 100644
--- a/pkgs/package_config/test/parse_test.dart
+++ b/pkgs/package_config/test/parse_test.dart
@@ -6,8 +6,8 @@
 
 import "package:test/test.dart";
 
-import "package:package_config_2/src/packages_file.dart" as packages;
-import "package:package_config_2/src/package_config_json.dart";
+import "package:package_config/src/packages_file.dart" as packages;
+import "package:package_config/src/package_config_json.dart";
 import "src/util.dart";
 
 void main() {