title: mybatis-generator maven dependency issue
body: <p>I create a Maven project with the dependency:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;dependency&gt;
      &lt;groupId&gt;org.mybatis.generator&lt;/groupId&gt;
      &lt;artifactId&gt;mybatis-generator-core&lt;/artifactId&gt;
      &lt;version&gt;1.3.3-SNAPSHOT&lt;/version&gt;
  &lt;/dependency&gt;
  </code></pre>
  
  <p>but it doesn't work. The error is:</p>
  
  <blockquote>
    <p>Missing artifact org.mybatis.generator:mybatis-generator-core:jar:1.3.3-SNAPSHOT</p>
  </blockquote>