Update README.md to reflect new import style for notification URLs

- Switched from `url` to `path` for including notification URLs in examples
- Removed redundant import statement for `notifications.urls`
- Corrected template tag name in the documentation

README.md

@@ -78,19 +78,13 @@ INSTALLED_APPS = (
 Add the notifications urls to your urlconf:
 
 ```python
-import notifications.urls
-
 urlpatterns = [
     ...
-    url('^inbox/notifications/', include(notifications.urls, namespace='notifications')),
+    path('inbox/notifications/', include("notifications.urls", namespace='notifications')),
     ...
 ]
 ```
 
-The method of installing these urls, importing rather than using
-`'notifications.urls'`, is required to ensure that the urls are
-installed in the `notifications` namespace.
-
 To run schema migration, execute
 `python manage.py migrate notifications`.
 
@@ -261,7 +255,7 @@ Mark the current object as read.
 
 ### Template tags
 
-Put `{% load notifications\_tags %}` in the template before
+Put `{% load notifications_tags %}` in the template before
 you actually use notification tags.
 
 ### `notifications_unread`