title: Vaadin Maven Plugin tries to compile subversion directory as a theme
body: <p>I have an example project created using -</p>
  
  <pre><code>mvn archetype:generate -DarchetypeGroupId=com.vaadin \
      -DarchetypeArtifactId=vaadin-archetype-application \
      -DarchetypeVersion=7.2.5 -Dpackaging=war \
      -DgroupId=com.Example -DartifactId=ProjectA
  </code></pre>
  
  <p>During the maven compilation, the compile-theme goal tries to compile the subversion directory.</p>
  
  <pre><code>[INFO] --- vaadin-maven-plugin:7.2.5:compile-theme (default) @ UIEngine ---
  [INFO] Updating theme VAADIN/themes/bootstrap
  [INFO] Theme "VAADIN/themes/bootstrap" compiled
  [INFO] Updating theme VAADIN/themes/.svn
  [ERROR] /home/gpn/workspace/ProjectA/src/main/webapp/VAADIN/themes/.svn/styles.scss could not be read!
  [INFO] Theme "VAADIN/themes/.svn" compiled
  </code></pre>
  
  <p>Is there any method to tell maven to ignore .svn directory or to compile only certain themes?</p>
  
  <p>Thanks and Best Regards,
  GPN</p>