Set version to 3.3.1. (#330)

Author: roimenashe

README.md

@@ -53,7 +53,7 @@ Add the Maven dependency:
 <dependency>
   <groupId>com.aerospike</groupId>
   <artifactId>spring-data-aerospike</artifactId>
-  <version>3.3.0</version>
+  <version>3.3.1</version>
 </dependency>
 ```
 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.aerospike</groupId>
     <artifactId>spring-data-aerospike</artifactId>
-    <version>3.3.0</version>
+    <version>3.3.1</version>
     <name>Spring Data Aerospike</name>
     <organization>
         <name>Aerospike Inc.</name>