Add build visit (#36)

* Add build sign-in option.

* Test can signin in with build.

* Add build option.

bikeshop_project/core/migrations/0003_auto_20170219_1741.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.4 on 2017-02-19 17:41
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0002_auto_20170101_2054'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='visit',
+            name='purpose',
+            field=models.CharField(choices=[('VOLUNTEER', 'volunteer'), ('FIX', 'fix bike'), ('BUILD', 'build bike'), ('WORKSHOP', 'workshop'), ('VISIT', 'visit'), ('DONATE', 'donate'), ('STAFF', 'staff')], max_length=50),
+        ),
+    ]

bikeshop_project/core/models.py

@@ -49,6 +49,7 @@ class Payment(models.Model):
 class Visit(models.Model):
     VOLUNTEER = 'VOLUNTEER'
     FIX = 'FIX'
+    BUILD = 'BUILD'
     WORKSHOP = 'WORKSHOP'
     VISIT = 'VISIT'
     DONATE = 'DONATE'
@@ -56,7 +57,8 @@ class Visit(models.Model):
 
     visit_choices = (
         (VOLUNTEER, 'volunteer'),
-        (FIX, 'fix bike'),  # fix
+        (FIX, 'fix bike'),
+        (BUILD, 'build bike'),
         (WORKSHOP, 'workshop'),
         (VISIT, 'visit'),
         (DONATE, 'donate'),