add on_air field to soma log lines

nonstop/migrations/0002_somalogline_on_air.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('nonstop', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='somalogline',
+            name='on_air',
+            field=models.NullBooleanField(verbose_name=b'On Air'),
+            preserve_default=True,
+        ),
+    ]

nonstop/models.py

@@ -63,3 +63,4 @@ class SomaLogLine(models.Model):
 
     filepath = models.ForeignKey(NonstopFile)
     play_timestamp = models.DateTimeField()
+    on_air = models.NullBooleanField('On Air')