Using icons in TextInputLayout
Hi,
Firstly, thanks a lot for creating this wonderful package. I am trying to add an icon with TextInputLayout. in the onCreate method i have initialised as per step 3 of readme

LayoutInflaterCompat.setFactory(getLayoutInflater(), new IconicsLayoutInflater(getDelegate()));
then in my XML I use

```
<android.support.design.widget.TextInputLayout
        android:id="@+id/input_layout_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/input_password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="{faw-camera-retro} email"/>

    </android.support.design.widget.TextInputLayout>
```

Can you please let me know what I am missing.

Cheers!!!
