update docs for java-action-archetype (#160)

diff --git a/README.md b/README.md
index eee3b31..fae5917 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@
 ## Subprojects
 
 * [docker-compose](docker-compose/README.md) allows testing OpenWhisk locally, using Docker Compose. This is ideal if you are contributing to core development
+* [java-action-archetype](java-action-archetype/README.md) This archetype helps to generate the Java Action template project.
 * [node-local](node-local/README.md) allows testing individual OpenWhisk functions locally, using only node.js. This is ideal if you are writing node.js functions to run in OpenWhisk, but need to emulate some of OpenWhisk's behavior in creating `params` and expecting promises.
 * [maven-java](maven-java/README.md) allows testing OpenWhisk Java Actions. This shows how to package the function dependencies e.g. external jar.
 
diff --git a/java-action-archetype/README.md b/java-action-archetype/README.md
index 67bf3da..d3929f5 100644
--- a/java-action-archetype/README.md
+++ b/java-action-archetype/README.md
@@ -11,6 +11,11 @@
 
 [WSK CLI](https://github.com/apache/incubator-openwhisk/blob/master/docs/cli.md) is configured 
 
+## Install the archetype
+```sh
+mvn -DskipTests=true -Dmaven.javadoc.skip=true -B -V clean install
+```
+
 ## Generate project 
 
 ```sh