Fix decider helper APIs (#127)

Author: longquanzheng

README.md

@@ -9,15 +9,15 @@ See [samples](https://github.com/indeedeng/iwf-java-samples) for how to use this
 ## Gradle
 ```gradle
 // https://mvnrepository.com/artifact/io.iworkflow/iwf-java-sdk
-implementation 'io.iworkflow:iwf-java-sdk:1.2.5'
+implementation 'io.iworkflow:iwf-java-sdk:1.2.6'
 ```
 ## Maven
 ```
 <!-- https://mvnrepository.com/artifact/io.iworkflow/iwf-java-sdk -->
 <dependency>
     <groupId>io.iworkflow</groupId>
     <artifactId>iwf-java-sdk</artifactId>
-    <version>1.2.5</version>
+    <version>1.2.6</version>
     <type>pom</type>
 </dependency>
 

build.gradle

@@ -150,7 +150,7 @@ signing {
 }
 
 group = "io.iworkflow"
-version = "1.2.5"
+version = "1.2.6"
 
 nexusPublishing {
     repositories {

src/main/java/io/iworkflow/core/StateDecision.java

@@ -35,11 +35,13 @@ public static StateDecision forceCompleteWorkflow(final Object output) {
 
     public static StateDecision gracefulCompleteWorkflow() {
         return ImmutableStateDecision.builder().nextStates(Arrays.asList(
+                StateMovement.gracefulCompleteWorkflow()
         )).build();
     }
 
     public static StateDecision forceCompleteWorkflow() {
         return ImmutableStateDecision.builder().nextStates(Arrays.asList(
+                StateMovement.forceCompleteWorkflow()
         )).build();
     }