title: Android design support library proguard rules
body: <p>Have been trying to find some information about the rules needed for the new design support library to work passing proguard. I couldn't find any information about it.</p>
  
  <p>Ended up using these rules:</p>
  
  <pre><code>-keep class android.support.design.widget.** { *; }
  -keep interface android.support.design.widget.** { *; }
  -dontwarn android.support.design.**
  </code></pre>
  
  <p>These rules seem to work but I'm not really sure if there are better rules or if it works with all the classes inside the design support library</p>