docs: update dynamic routes in example and README (#47)

Author: felangel

README.md

@@ -131,7 +131,7 @@ Future<Response> onRequest(RequestContext context) async {
 
 #### Dynamic Routes 🌓
 
-Dart Frog supports dynamic routes. For example, if you create a file called `routes/posts/<id>.dart`, then it will be accessible at `/posts/1`, `/posts/2`, etc.
+Dart Frog supports dynamic routes. For example, if you create a file called `routes/posts/[id].dart`, then it will be accessible at `/posts/1`, `/posts/2`, etc.
 
 Routing parameters are forwarded to the `onRequest` method as seen below.
 

example/pubspec.yaml

@@ -7,10 +7,7 @@ environment:
   sdk: ">=2.17.0 <3.0.0"
 
 dependencies:
-  dart_frog:
-    git:
-      url: https://github.com/VeryGoodOpenSource/dart_frog
-      path: packages/dart_frog
+  dart_frog: ^0.0.1-dev
 
 dev_dependencies:
   mocktail: ^0.3.0

example/routes/echo/<message>.dart renamed to example/routes/echo/[message].dart

@@ -4,7 +4,7 @@ import 'package:dart_frog/dart_frog.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:test/test.dart';
 
-import '../../../routes/echo/<message>.dart' as route;
+import '../../../routes/echo/[message].dart' as route;
 
 class _MockRequestContext extends Mock implements RequestContext {}