title: Crouton depends on libraries but is not a library itself
body: <p>I'm using Android Studio 0.6.1, with <a href="https://github.com/keyboardsurfer/Crouton">Crouton</a> library and today after gradle sync I got next error:</p>
  
  <pre><code>Error:A problem occurred configuring root project 'project_name'.
  Module version de.keyboardsurfer.android.widget:crouton:1.8.4 depends on libraries but is not a library itself
  </code></pre>
  
  <p>That's going on? </p>