title: Adding the current date with Maven2 filtering
body: <p>I have a Maven2 project, and I need to add, in a properties file, the current version and the current date.</p>
  
  <p>For the current version, I've used <code>${project.version}</code>, which works correctly.</p>
  
  <p>My question is how can I set the current date (i.e. the date when the build is done by Maven2) in my properties file:</p>
  
  <pre><code>client.version=Version ${project.version}
  client.build=???
  </code></pre>
  
  <p>(in addition, if I can specify the format for the date, it will be really great)</p>