Configured the project to use Hibernate validation

This requires the Hibernate Tools (a part of JBoss Tools) to be
installed in Eclipse.

.project

@@ -25,10 +25,16 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.hibernate.eclipse.console.hibernateBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 	</buildSpec>
 	<natures>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
+		<nature>org.hibernate.eclipse.console.hibernateNature</nature>
 	</natures>
 </projectDescription>