Add mDNS discovery to the Fletch compiler

pkg/fletchc/lib/src/verbs/x_discover_verb.dart

Index: pkg/fletchc/lib/src/verbs/x_discover_verb.dart
diff --git a/pkg/fletchc/lib/src/verbs/x_discover_verb.dart b/pkg/fletchc/lib/src/verbs/x_discover_verb.dart
new file mode 100644
index 0000000000000000000000000000000000000000..b661743a826be3c2489098d1a958453cd4b34a42
--- /dev/null
+++ b/pkg/fletchc/lib/src/verbs/x_discover_verb.dart
@@ -0,0 +1,21 @@
+// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE.md file.
+
+library fletchc.verbs.x_upgrade_verb;

[wibling, 2015/11/10 12:46:34]

NIT: x_upgrade -> x_discover

[Søren Gjesse, 2015/11/10 15:55:11]

Done.

+
+import 'infrastructure.dart';
+
+import 'documentation.dart' show
+    discoverDocumentation;
+
+import '../driver/developer.dart' show
+    discoverDevices;
+
+const Action discoverAction =
+    const Action(discover, discoverDocumentation);
+
+Future<int> discover(AnalyzedSentence sentence, VerbContext context) async {
+  await discoverDevices();
+  return 1;
+}