First of all you need install this archetype into your local maven repository.
Clone the project from gihub and run mvn install
Now you are ready to use it.
mvn archetype:generate \
-DarchetypeGroupId=com.agritsik.maven.archetypes \
-DarchetypeArtifactId=javaee7-micro \
-DarchetypeVersion=1.0-beta-1
# OR
mvn archetype:generate \
-DarchetypeGroupId=com.agritsik.maven.archetypes \
-DarchetypeArtifactId=javaee7-micro \
-DarchetypeVersion=1.0-beta-1 \
-DgroupId=com.agritsik.samples \
-DartifactId=test-new-archetype