added createuser command.

program/management/commands/createuser.py

+from django.contrib.auth.models import User
+from django.core.management.base import BaseCommand, CommandError
+
+from optparse import make_option
+
+class Command(BaseCommand):
+    help = 'creates an user'
+    option_list = BaseCommand.option_list + (
+        make_option('--username', dest='username', default=None, help='Specifies the username.'),
+        make_option('--email', dest='email', default=None, help='Specifies the email address.'),
+    )
+
+    def handle(self, *args, **options):
+        username = options.get('username', None)
+        email = options.get('email', None)
+
+        if not username or not email:
+            raise CommandError("You must use --username and --email.")
+        try:
+            User.objects.get(username=username)
+        except User.DoesNotExist:
+            User.objects.create_user(username=username, email=email)
+            print 'user created successfully.'
+        else:
+            print 'User already exists, no need to create.'