Added missing migration

boards/migrations/0020_merge.py

@@ -0,0 +1,15 b''
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('boards', '0018_merge'),
+        ('boards', '0019_auto_20150519_1323'),
+    ]
+
+    operations = [
+    ]