Update docs

- Add more repository config samples.
- Relates to #270

spring-statemachine-data/redis/src/test/java/org/springframework/statemachine/data/redis/docs/DocsRedisRepositorySampleTests1.java

@@ -49,4 +49,31 @@ public class DocsRedisRepositorySampleTests1 {
 		}
 // end::snippetA[]
 	}
+
+	public static class Config2 {
+		// tag::snippetB[]
+		@Autowired
+		StateRepository<RedisRepositoryState> stateRepository;
+
+		@Autowired
+		TransitionRepository<RedisRepositoryTransition> transitionRepository;
+
+		void addConfig() {
+			RedisRepositoryState stateS1 = new RedisRepositoryState("S1", true);
+			RedisRepositoryState stateS2 = new RedisRepositoryState("S2");
+			RedisRepositoryState stateS3 = new RedisRepositoryState("S3");
+
+			stateRepository.save(stateS1);
+			stateRepository.save(stateS2);
+			stateRepository.save(stateS3);
+
+
+			RedisRepositoryTransition transitionS1ToS2 = new RedisRepositoryTransition(stateS1, stateS2, "E1");
+			RedisRepositoryTransition transitionS2ToS3 = new RedisRepositoryTransition(stateS2, stateS3, "E2");
+
+			transitionRepository.save(transitionS1ToS2);
+			transitionRepository.save(transitionS2ToS3);
+		}
+		// end::snippetB[]
+	}
 }