include copy of django_extension, dont install django from git

contrib/django_extensions/docs/create_app.rst

@@ -0,0 +1,41 @@
+create_app
+==========
+
+:synopsis: Creates an application directory structure for the specified application name.
+
+This command allows you to specify the --template option where you can indicate
+a template directory structure to use as your default.
+
+The --diagram option generates the models.py and admin.py from a .dia file.
+
+
+Example Usage
+-------------
+
+All examples assume your current directory is the project directory and
+settings.py is under it.
+
+::
+
+  # Get command help
+  ./manage.py create_app --help
+
+::
+
+  # Generate models.py and admin.py from [APP_NAME].dia file. This file should
+  # be placed in the settings.py directory.
+  ./manage.py create_app -d APP_NAME
+
+
+Example generated from sample.dia
+---------------------------------
+
+::
+
+  ./manage.py create_app --diagram=sample.dia webdata
+
+-d switch or --diagram option use dia2django_ to generate models.py and is
+better documented in `django wiki`_.
+
+.. _dia2django: https://svn.devnull.li/main/pythonware/dia2django/trunk/doc/
+.. _`django wiki`: http://code.djangoproject.com/wiki/Dia2Django