validate: update readme, do not export pkg:matcher

packages/validate/README.md

@@ -3,12 +3,10 @@
 [![build status](https://travis-ci.org/angel-dart/validate.svg)](https://travis-ci.org/angel-dart/validate)
 
 Strongly-typed form handlers and validators for Angel.
+Version `3.x` is a major improvement over `2.x`, though it does include breaking changes.
 
-Validation library based on the `matcher` library, with Angel support.
-Why re-invent the wheel, when you can use the same validators you already
-use for tests?
-
-For convenience's sake, this library also exports `matcher`.
+`package:angel_validate` allows you to easily sanitize incoming data, and to deserialize
+that data into Dart classes (usually using `package:angel_serialize`).
 
 # Field
 The basic unit is the `Field` class, which is a type-safe way to read
@@ -23,6 +21,13 @@ app.get('/hello', (req, res) async {
 });
 ```
 
+A `Field` can also use `Matcher` objects from `package:matcher` (which you may recognize from
+its usage in `package:test`):
+
+```dart
+var positiveNumberField = IntField('pos_num').match([isPositive]);
+```
+
 There are several included field types:
 * `TextField`
 * `BoolField`

packages/validate/example/main.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:angel_framework/angel_framework.dart';
 import 'package:angel_framework/http.dart';
 import 'package:angel_validate/angel_validate.dart';
@@ -5,7 +7,7 @@ import 'package:http_parser/http_parser.dart';
 import 'package:logging/logging.dart';
 import 'package:pretty_logging/pretty_logging.dart';
 
-main() async {
+Future<void> main() async {
   Logger.root
     ..level = Level.ALL
     ..onRecord.listen(prettyLog);

packages/validate/lib/angel_validate.dart

@@ -1,2 +1,5 @@
-export 'package:matcher/matcher.dart';
-export 'without_matcher.dart';
+export 'src/common_fields.dart';
+export 'src/field.dart';
+export 'src/form.dart';
+export 'src/form_renderer.dart';
+export 'src/matchers.dart';

packages/validate/lib/without_matcher.dart

@@ -1,5 +0,0 @@
-export 'src/common_fields.dart';
-export 'src/field.dart';
-export 'src/form.dart';
-export 'src/form_renderer.dart';
-export 'src/matchers.dart';