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

pom.xml

@@ -2,7 +2,7 @@
  <modelVersion>4.0.0</modelVersion>
  <groupId>net.whydah.sso</groupId>
  <artifactId>Whydah-Admin-SDK</artifactId>
- <version>2.25.8</version>
+ <version>2.25.9-SNAPSHOT</version>
  <name>Whydah-Admin-SDK</name>
  <packaging>jar</packaging>
  <url>https://wiki.cantara.no/display/iam/Whydah-Admin-SDK</url>
@@ -24,7 +24,7 @@
  <developerConnection>scm:git:ssh://git@github.com/cantara/Whydah-Admin-SDK.git</developerConnection>
  <connection>scm:git:https://github.com/cantara/Whydah-Admin-SDK.git</connection>
  <url>https://github.com/cantara/Whydah-Java-SDK</url> 
- <tag>Whydah-Admin-SDK-2.25.8</tag>
+ <tag>HEAD</tag>
  </scm>
  <developers>
  <developer>