title: Add additional path to exec-maven-plugin
body: <p>I would like to add an additional class path to the exec-maven-plugin.<br>
  Besides the %classpath, I would like to add an extra path to a directory containing resources (/Users/kornp/resources).
  Currently, my pom looks like this:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;plugin&gt;
    &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt;
    &lt;artifactId&gt;exec-maven-plugin&lt;/artifactId&gt;
    &lt;version&gt;1.1.1&lt;/version&gt;
    &lt;configuration&gt;
      &lt;executable&gt;java&lt;/executable&gt;
      &lt;classpathScope&gt;runtime&lt;/classpathScope&gt;
      &lt;arguments&gt;
        &lt;argument&gt;%classpath:/Users/kornp/resources&lt;/argument&gt;
        &lt;argument&gt;org.drrabbit.maventest.App&lt;/argument&gt;
      &lt;/arguments&gt;
    &lt;/configuration&gt;
  &lt;/plugin&gt;
  </code></pre>
  
  <p>How should I configure this?</p>