Fix field warnings for Django 1.8 (with migration)

todo/migrations/0002_auto_20150614_2339.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('todo', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='item',
+            name='created_date',
+            field=models.DateField(auto_now=True),
+        ),
+        migrations.AlterField(
+            model_name='item',
+            name='priority',
+            field=models.PositiveIntegerField(),
+        ),
+    ]