Merge pull request GoogleCloudPlatform#90 from GoogleCloudPlatform/tswast-hello

Recommend `jetty:run-exploded` for local Hello World.

Author: tswast

helloworld-servlet/README.md

@@ -8,7 +8,7 @@
 ## Run the Application locally
 1. Set the correct Cloud SDK project via `gcloud config set project YOUR_PROJECT`
 id of your application.
-2. Run `mvn gcloud:run`
+2. Run `mvn jetty:run-exploded`
 4. Visit http://localhost:8080
 
 ## Deploy to AppEngine Managed VMs