Bump Java version to 1.6

This fixes #5

Author: michael-o

pom.xml

@@ -306,7 +306,7 @@ limitations under the License.
   </distributionManagement>
 
   <properties>
-    <javaVersion>5</javaVersion>
+    <javaVersion>6</javaVersion>
     <maven.compiler.source>1.${javaVersion}</maven.compiler.source>
     <maven.compiler.target>1.${javaVersion}</maven.compiler.target>    
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>