Django: Add migration with South

gistfile1.py

# This example show how to integrate "South" into your exiting Django projects 
# South - intelligent schema and data migrations for  Django projects. 

# Install South from pip
$ sudo pip install South

# Run the sysncdb
$ python manage.py syncdb

# Do an initial migration
$ python manage.py schemamigration <appname> --initial

# Change your models

# Create the migration 
$ python manage.py schemamigration <appname> --auto

# Run the migration afterwards 
$python manage.py migrate <appname>