IconicsDrawable doesn't work on TextView.setCompoundDrawables
IconicsDrawable doesn't work on TextView.setCompoundDrawables()

```
TextView textView = (TextView) getRootView().findViewById(R.id.text);
Drawable drawable = new IconicsDrawable(getAndroidContext()).icon(Octicons.Icon.oct_alert).sizeDp(30);
textView.setCompoundDrawables(drawable, null, null, null);
```

but it will work if do like:

```
TextView textView = (TextView) getRootView().findViewById(R.id.text);
Drawable drawable = new IconicsDrawable(getAndroidContext()).icon(Octicons.Icon.oct_alert).sizeDp(30);
textView.setBackground(drawable);
textView.setCompoundDrawables(drawable, null, null, null);
```

why?, I only want to get a Drawable.
