Initial saga prototype has been added.

	modified:   framework/src/main/java/com/eventor/Eventor.java
	modified:   framework/src/main/java/com/eventor/api/annotations/Saga.java
	modified:   framework/src/main/java/com/eventor/internal/reflection/ClassProcessor.java
	modified:   framework/src/test/groovy/com/eventor/EventorTest.groovy
	new file:   framework/src/test/groovy/com/eventor/university/CourseRegistration.java
	deleted:    framework/src/test/groovy/com/eventor/university/RegisterCourse.java
	deleted:    framework/src/test/groovy/com/eventor/university/RegistreCourse.java