changelog updated

Author: ishaileshmishra

CHANGELOG.md

@@ -1,6 +1,16 @@
 
 ## CHANGELOG  
-   
+
+
+## Version 1.3.1
+  ### Date: May-02-2019
+  Change: include reference bug fixed
+  added testcase report for v1.3.1
+
+
+------------------------------------------------
+
+
 ## Version 1.3.0  
   ### Date: Apr-12-2019  
   Change: Added support of below methods in SDK   

README.md

@@ -20,13 +20,13 @@ To use the Contentstack Java SDK to your existing project, perform the steps giv
 <dependency>
   <groupId>com.contentstack.sdk</groupId>
   <artifactId>java</artifactId>
-  <version>1.2.1</version>
+  <version>1.3.1</version>
 </dependency>
 ```
 
 2. **Gradle**
 ```
-implementation 'com.contentstack.sdk:java:1.2.1'
+implementation 'com.contentstack.sdk:java:1.3.1'
 ```
 
 ### Key Concepts for using Contentstack

pom.properties

@@ -1,4 +1,4 @@
 # Written manually.
-version=1.2.0
+version=1.3.1
 groupId=com.contentstack.sdk
 artifactId=java

src/main/java/resources/version.txt

@@ -1 +1 @@
-1.2.0
+1.3.1