Add unique version numbers to the modules, which were lost when I set up the possibility to release the modules individually.

git-svn-id: https://svn.apache.org/repos/asf/maven/doxia/doxia-tools/trunk@1397266 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index cd82f97..e2b0359 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,6 +30,7 @@
   </parent>
 
   <artifactId>doxia-book-maven-plugin</artifactId>
+  <version>1.3-SNAPSHOT</version>
   <packaging>maven-plugin</packaging>
 
   <name>Doxia Book Maven Plugin</name>
@@ -69,7 +70,7 @@
     <dependency>
       <groupId>${project.groupId}</groupId>
       <artifactId>doxia-book-renderer</artifactId>
-      <version>2</version>
+      <version>1.3-SNAPSHOT</version>
     </dependency>
 
     <dependency>