Failed to load iconic imageview
Hi @mikepenz , I can't load iconics by using XML Layout, It not crash app but appear not thing when run app :( Can you help me plz :(

```
Could not find class 'com.mikepenz.materialdrawer.view.BezelImageView$CustomOutline', referenced from method com.mikepenz.materialdrawer.view.BezelImageView.onSizeChanged
```

My XML is:

```
<com.mikepenz.iconics.view.IconicsImageView
                        android:id="@+id/favorite_channel_icon"
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:padding="5dp"
                        app:iiv_icon="gmd-repeat"/>
```

Thank you very much 
