added migration for private media storage in banking example

Author: briancaffey

backend/apps/banking/migrations/0005_auto_20200606_1325.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.6 on 2020-06-06 13:25
+
+import backend.storage_backends
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('banking', '0004_transaction_source_file'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='statementfile',
+            name='statement_file',
+            field=models.FileField(storage=backend.storage_backends.PrivateMediaStorage, upload_to='banking'),
+        ),
+    ]