Fix README example missing import (#51)

Fixes #50

Update to stable SDK and dev deps, add testing on the oldest supported
SDK.
diff --git a/.github/workflows/test-package.yml b/.github/workflows/test-package.yml
index 01d7317..b5fa520 100644
--- a/.github/workflows/test-package.yml
+++ b/.github/workflows/test-package.yml
@@ -23,7 +23,7 @@
         sdk: [dev]
     steps:
       - uses: actions/checkout@v2
-      - uses: dart-lang/setup-dart@v0.1
+      - uses: dart-lang/setup-dart@v1.0
         with:
           channel: ${{ matrix.sdk }}
       - id: install
@@ -47,10 +47,10 @@
       matrix:
         # Add macos-latest and/or windows-latest if relevant for this package.
         os: [ubuntu-latest]
-        sdk: [dev]
+        sdk: [2.12.0, dev]
     steps:
       - uses: actions/checkout@v2
-      - uses: dart-lang/setup-dart@v0.1
+      - uses: dart-lang/setup-dart@v1.0
         with:
           channel: ${{ matrix.sdk }}
       - id: install
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4bc3087..00412ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.0.1
+
+* Update example in README for new import.
+
 ## 2.0.0
 
 * Stable null safety release.
diff --git a/README.md b/README.md
index 3a7d251..75f2b00 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@
 
 ```dart
 import 'package:glob/glob.dart';
+import 'package:glob/list_local_fs.dart';
 
 final dartFile = Glob("**.dart");
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 7041f27..cafd6dd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,12 +1,11 @@
 name: glob
-version: 2.0.0
+version: 2.0.1
 
 description: Bash-style filename globbing.
-author: Dart Team <misc@dartlang.org>
-homepage: https://github.com/dart-lang/glob
+repository: https://github.com/dart-lang/glob
 
 environment:
-  sdk: '>=2.12.0-0 <3.0.0'
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   async: ^2.5.0
@@ -17,5 +16,5 @@
   string_scanner: ^1.1.0
 
 dev_dependencies:
-  test: ^1.16.0-nullsafety.9
-  test_descriptor: ^2.0.0-nullsafety
+  test: ^1.16.0
+  test_descriptor: ^2.0.0