title: Checkstyle not working
body: <p>I am new to maven and chekstyle, so need to ask some question... I want to use checkstyle in my maven based project, so in my <code>pom.xml</code> I have add the dependency </p>
  
  <pre><code>&lt;dependency&gt;
     &lt;groupId&gt;checkstyle&lt;/groupId&gt;
     &lt;artifactId&gt;checkstyle&lt;/artifactId&gt;
     &lt;version&gt;2.4&lt;/version&gt;
  &lt;/dependency&gt;
  </code></pre>
  
  <p>and also I have added the entry in plugin tag:</p>
  
  <pre><code>&lt;plugin&gt;
    &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
    &lt;artifactId&gt;maven-checkstyle-plugin&lt;/artifactId&gt;
    &lt;version&gt;2.4&lt;/version&gt;
    &lt;configuration&gt;
      &lt;enableRulesSummary&gt;true&lt;/enableRulesSummary&gt;
      &lt;configLocation&gt;checkstyle.xml&lt;/configLocation&gt;
    &lt;/configuration&gt;
  &lt;/plugin&gt;
  </code></pre>
  
  <p>But when I run my maven build with command <code>mvn clean install</code>, checkstyle doesn't do anything. And as I dont have any <code>checkstyle.xml</code> in my system yet, shouldn't it complains me about the error?</p>
  
  <p>What else configuration am I missing?</p>