display toast when changing favorite status of facility

closes #12

app/src/main/java/srct/whatsopen/views/adapters/FacilityListAdapter.java

@@ -3,6 +3,7 @@ package srct.whatsopen.views.adapters;
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.res.Resources;
 import android.graphics.Typeface;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.widget.RecyclerView;
@@ -12,6 +13,7 @@ import android.view.ViewGroup;
 import android.widget.ImageButton;
 import android.widget.LinearLayout;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import java.util.Calendar;
 
@@ -136,6 +138,12 @@ public class FacilityListAdapter extends
         @OnClick(R.id.favorite_button)
         public void setFavorite() {
             mPresenter.toggleFavorite(data);
+            Context context = getContext();
+            Resources res = context.getResources();
+            int formatName = data.isFavorited() ? R.string.toast_unset_favorite : R.string.toast_set_favorite;
+            String msg = String.format(res.getString(formatName), data.getName());
+            Toast toast = Toast.makeText(context, msg, Toast.LENGTH_SHORT);
+            toast.show();
         }
 
         @Override

app/src/main/res/values/strings.xml

 <resources>
     <string name="app_name">What\'s Open</string>
+    <string name="toast_set_favorite">Added %s to Favorites</string>
+    <string name="toast_unset_favorite">Removed %s from Favorites</string>
 </resources>