add local settings template file

very small first contribution. use a template file for local settings. I find it easier for first installation and it makes the readme file shorter.

smash/smash/local_settings.py.template

+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'Paste long random string here' # Insert long random string
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+WSGI_APPLICATION = 'smash.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/1.10/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'NAME': 'smashdb', # Insert your database's name
+        'USER': 'postgresmashuser', # Insert your database's user
+        'PASSWORD': 'thePOSTGRESpassword', # Insert your user's password
+        'HOST': 'localhost',
+        'PORT': '' # '' === default one # Empty string is OK
+
+        # If to use sqlite
+        # 'ENGINE': 'django.db.backends.sqlite3',
+        # 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+    }
+}
+
+STATIC_ROOT = '/tmp/static' # Warning! `/tmp` directory can be flushed in any moment; use a persistent one; e.g. ~/tmp/static
+MEDIA_ROOT = '/tmp/media' # Warning! `/tmp` directory can be flushed in any moment; use a persistent one, e.g. ~/tmp/media