Add appengine/gcloud/mustache dependencies.

pkg/appengine/pubspec.yaml

Index: pkg/appengine/pubspec.yaml
diff --git a/pkg/appengine/pubspec.yaml b/pkg/appengine/pubspec.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..47b6ce71c2e9843444a2838a02056c7c943fdfc7
--- /dev/null
+++ b/pkg/appengine/pubspec.yaml
@@ -0,0 +1,17 @@
+name: appengine
+version: 0.2.5
+author: Dart Team <misc@dartlang.org>
+description: Support for using Dart as a custom runtime on Google App Engine Managed VMs
+homepage: https://www.dartlang.org/cloud
+environment:
+  sdk: '>=1.5.0 <2.0.0'
+dependencies:
+  gcloud: '>=0.1.2 <0.2.0'
+  googleapis_auth: '>=0.1.1 <0.3.0'
+  fixnum: '>=0.9.0 <0.10.0'
+  http_server: '>=0.9.2 <0.10.0'
+  memcache: '>=0.1.0 <0.2.0'
+  path: '>=1.2.0 <2.0.0'
+  protobuf: '>=0.3.3 <0.4.0'
+dev_dependencies:
+  unittest: '>=0.11.0 <0.12.0'