Added init.py

Without it an exception is throne.

```
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/bdd/.virtualenvs/django-starter-project/lib/python2.7/site-packages/django/core/management/__init__.py", line 453, in execute_from_command_line
    utility.execute()
  File "/Users/bdd/.virtualenvs/django-starter-project/lib/python2.7/site-packages/django/core/management/__init__.py", line 376, in execute
    sys.stdout.write(self.main_help_text() + '\n')
  File "/Users/bdd/.virtualenvs/django-starter-project/lib/python2.7/site-packages/django/core/management/__init__.py", line 242, in main_help_text
    for name, app in six.iteritems(get_commands()):
  File "/Users/bdd/.virtualenvs/django-starter-project/lib/python2.7/site-packages/django/core/management/__init__.py", line 109, in get_commands
    apps = settings.INSTALLED_APPS
  File "/Users/bdd/.virtualenvs/django-starter-project/lib/python2.7/site-packages/django/conf/__init__.py", line 52, in __getattr__
    self._setup(name)
  File "/Users/bdd/.virtualenvs/django-starter-project/lib/python2.7/site-packages/django/conf/__init__.py", line 47, in _setup
    self._wrapped = Settings(settings_module)
  File "/Users/bdd/.virtualenvs/django-starter-project/lib/python2.7/site-packages/django/conf/__init__.py", line 132, in __init__
    raise ImportError("Could not import settings '%s' (Is it on sys.path?): %s" % (self.SETTINGS_MODULE, e))
ImportError: Could not import settings 'someapp.settings.local' (Is it on sys.path?): No module named someapp.settings.local
```