Default to build/web or web

lib/angel_static.dart

@@ -5,7 +5,14 @@ import 'package:angel_framework/angel_framework.dart';
 import 'package:mime/mime.dart' show lookupMimeType;
 
 /// Serves files statically from a given directory.
-Middleware serveStatic(Directory sourceDirectory) {
+Middleware serveStatic([Directory sourceDirectory]) {
+  if (sourceDirectory == null) {
+    String dirPath = Platform.environment['ANGEL_ENV'] == 'production'
+        ? './build/web'
+        : './web';
+    sourceDirectory = new Directory(dirPath);
+  }
+
   return (RequestContext req, ResponseContext res) async {
     String requested = req.path.replaceAll(new RegExp(r'^\/'), '');
     File file = new File.fromUri(

pubspec.yaml

@@ -2,7 +2,7 @@ name: angel_static
 description: Static server middleware for Angel.
 homepage: https://github.com/angel-dart/angel_static
 author: thosakwe <thosakwe@gmail.com>
-version: 1.0.0-beta.1
+version: 1.0.0-beta.2
 dependencies:
   angel_framework: ">=0.0.0-dev < 0.1.0"
   mime: ">= 0.9.3 < 0.10.0"