* add function to retrieve the adapter

Author: mikepenz

library/src/main/java/com/mikepenz/materialdrawer/Drawer.java

@@ -7,6 +7,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.AbsListView;
+import android.widget.Adapter;
 import android.widget.AdapterView;
 import android.widget.BaseAdapter;
 import android.widget.FrameLayout;
@@ -420,6 +421,10 @@ public ListView getListView() {
             return mDrawer.mListView;
         }
 
+        public Adapter getAdapter() {
+            return mDrawer.mAdapter;
+        }
+
         /**
          * set the current selection in the drawer
          * <p/>