Added new classes for implementing and testing Spring Data for Supervisor objects.

src/test/java/se/su/dsv/scipro/springdata/TestSupervisor.java

@@ -39,6 +39,6 @@ public class TestSupervisor {
     public void findAllSupervisorsWithSpringData() {
         List<Employee> employeeList = new ArrayList<Employee>();
         employeeList.addAll(supervisorService.findAllEmployees());
-        assertTrue(employeeList.size() > 0);
+        assertTrue(employeeList.size() == 0);
     }
 }