import of ejb 3.x tutorial from http://theopentutorials.com/examples/java-ee/ejb3/how-to-create-a-ejb-3-x-project-using-maven-in-eclipse-part-1/ and http://theopentutorials.com/examples/java-ee/ejb3/how-to-create-a-ejb-3-x-project-using-maven-in-eclipse-part-2/