[maven-release-plugin] prepare for next development iteration

client/pom.xml

diff --git a/client/pom.xml b/client/pom.xml
index f849bfd..f27c085 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -5,7 +5,7 @@
     <groupId>io.prediction</groupId>
     <artifactId>sdk</artifactId>
     <relativePath>../pom.xml</relativePath>
-    <version>0.8.0</version>
+    <version>0.8.1-SNAPSHOT</version>
   </parent>
 
   <artifactId>client</artifactId>

pom.xml

diff --git a/pom.xml b/pom.xml
index 1c911ea..eedb085 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>io.prediction</groupId>
   <artifactId>sdk</artifactId>
-  <version>0.8.0</version>
+  <version>0.8.1-SNAPSHOT</version>
   <url>http://prediction.io</url>
   <packaging>pom</packaging>
   <name>PredictionIO Java SDK</name>