Fix missing import

Author: h6ah4i

library/src/main/java/com/h6ah4i/android/widget/advrecyclerview/headerfooter/AbstractHeaderFooterWrapperAdapter.java

@@ -20,6 +20,7 @@
 import android.support.v7.widget.RecyclerView;
 import android.view.ViewGroup;
 
+import com.h6ah4i.android.widget.advrecyclerview.adapter.AdapterPathSegment;
 import com.h6ah4i.android.widget.advrecyclerview.adapter.ItemIdComposer;
 import com.h6ah4i.android.widget.advrecyclerview.adapter.ItemViewTypeComposer;
 import com.h6ah4i.android.widget.advrecyclerview.composedadapter.ComposedAdapter;