Extending Runtime issues #131

Readme end incomplete "...you will have to edit the and properties in the pom.xml".

https://github.com/GoogleCloudPlatform/java-docs-samples/tree/master/managed_vms/extending-runtime

There is also missing imports

https://github.com/GoogleCloudPlatform/java-docs-samples/blob/master/managed_vms/extending-runtime/src/main/java/com/example/managedvms/extendingruntime/FortuneServlet.java