Bug and Problem in Use this Library.

Hello,
tank you.
i import your lib. and gradle is ready.

but in my layout have problem
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Error show in Android Studio :

```
java.lang.IndexOutOfBoundsException: Position must be less or equivalent than items size, items size is -1 current is 0   at com.luseen.luseenbottomnavigation.BottomNavigation.BottomNavigationView.onSizeChanged(BottomNavigationView.java:156)   at android.view.View.sizeChange(View.java:17641)   at android.view.View.setFrame(View.java:17603)   at android.view.View.layout(View.java:17520)   at android.view.ViewGroup.layout(ViewGroup.java:5612)   at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)   at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1730)   at android.widget.LinearLayout.onLayout(LinearLayout.java:1496)   at android.view.View.layout(View.java:17523)   at android.view.ViewGroup.layout(ViewGroup.java:5612)   at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)   at android.widget.FrameLayout.onLayout(FrameLayout.java:261)   at android.view.View.layout(View.java:17523)   at android.view.ViewGroup.layout(ViewGroup.java:5612)   at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)   at android.view.View.layout(View.java:17523)   at android.view.ViewGroup.layout(ViewGroup.java:5612) Copy stack to clipboard Tip: Try to refresh the layout.
```

Reproduce the reported layout using the XML in the issue and follow the stack trace to BottomNavigationView.java:156, especially its onSizeChanged path. Confirm the expected behavior for the bottom navigation and identify what prevents the IndexOutOfBoundsException during layout.

Written by the indexing model from the issue text.