title: Maven generate achetype in existed directory
body: <p>I'm trying to create empty Maven Web Project with an existing dir (actually from <em>github</em> project, it's empty and contains only <em>README</em> file).</p>
  
  <p>But maven seems to detect directory existence and failed with error:</p>
  
  <pre><code>[ERROR] Failed to execute goal org.apache.maven.plugins:maven-archetype-plugin:2.2:generate (default-cli) on project standalone-pom: Directory loms already exists - please run from a clean directory -&gt; [Help 1]
  </code></pre>
  
  <p>Any chance to force maven use an existing directory?</p>
  
  <p><strong><em>Invocation command:</em></strong></p>
  
  <pre><code>mvn archetype:generate -DgroupId=org.reaver.devs -DartifactId=loms -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=false
  </code></pre>