Add instructions and settings for running Django shell locally.

README.rst

@@ -40,6 +40,18 @@ To run the test suite:
     tox # to run only a single environment, do e.g. tox -e django18
 
 
+To use a Django shell to test commands:
+
+.. code:: bash
+
+    pip install -r django-requirements.txt
+    pip install -r requirements.txt
+    pip install -r test-requirements.txt
+    ./manage.py migrate
+    ./manage.py shell --settings=settings
+    >>> from submissions.serializers import StudentItemSerializer
+    >>> <other commands...>
+
 License
 -------
 

settings.py

@@ -8,10 +8,14 @@ TEMPLATE_DEBUG = DEBUG
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.sqlite3',
-        'TEST_NAME': 'submissions_test_db',
+        'NAME': 'submissions_db',
+        'TEST': {
+            'NAME': 'submissions_test_db',
+        }
     },
     'read_replica': {
         'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': 'submissions_read_replica_db',
         'TEST': {
             'MIRROR': 'default',
         },