java.lang.NullPointerException for IconicsImageView in 1.5.1/1.5.2
Tried migrating from 1.3.0 to 1.5.2 but ran into a NPE when trying to use `IconicsImageView`. Created a blank test project, added the dependency in build.gradle (full, not core), and created a simple `IconicsImageView` (copied from the sample app):

```
<com.mikepenz.iconics.view.IconicsImageView
    android:layout_width="72dp"
    android:layout_height="72dp"
    app:iiv_color="@android:color/holo_red_dark"
    app:iiv_icon="gmd-favorite" />
```

But it causes the following:

```
08-03 00:50:39.859    3415-3415/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.myapplication, PID: 3415
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapplication/com.example.myapplication.MainActivity}: android.view.InflateException: Binary XML file line #146: Error inflating class com.mikepenz.iconics.view.IconicsImageView
```

<_snip_>

```
Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'com.mikepenz.iconics.typeface.IIcon com.mikepenz.iconics.typeface.ITypeface.getIcon(java.lang.String)' on a null object reference
    at com.mikepenz.iconics.IconicsDrawable.<init>(IconicsDrawable.java:109)
    at com.mikepenz.iconics.view.IconicsImageView.<init>(IconicsImageView.java:56)
    at com.mikepenz.iconics.view.IconicsImageView.<init>(IconicsImageView.java:39)
```

Seems like `Iconics.findFont()` is returning null - can't find the font? The sample app works fine, but I didn't split it out from the locally compiled library.

Am I missing something here...?
