docs(django): enabling automatically and manually (#1249)

* docs(django): enabling automatically and manually

* Update ddtrace/contrib/django/__init__.py

Co-Authored-By: Brett Langdon <[email protected]>

Co-authored-by: Brett Langdon <[email protected]>

Author: majorgreys

ddtrace/contrib/django/__init__.py

@@ -3,6 +3,17 @@
 and cache calls in a Django application.
 
 
+Enable Django tracing automatically via ``ddtrace-run``::
+
+    ddtrace-run python manage.py runserver
+
+
+Django tracing can also be enabled manually::
+
+    from ddtrace import patch_all
+    patch_all()
+
+
 To have Django capture the tracer logs, ensure the ``LOGGING`` variable in
 ``settings.py`` looks similar to::
 
@@ -104,6 +115,9 @@
 3. Remove ``TraceMiddleware`` or ``TraceExceptionMiddleware`` if used in
    ``settings.py``.
 
+3. Enable Django tracing automatically via `ddtrace-run`` or manually by
+   adding ``ddtrace.patch_all()`` to ``settings.py``.
+
 The mapping from old configuration settings to new ones.
 
 +-----------------------------+-------------------------------------------------------------------------------------------------------------------------+
@@ -191,8 +205,9 @@
    tracer.set_tags({'env': 'production'})
 
    import my.custom.tracer
-   from ddtrace import Pin
+   from ddtrace import Pin, patch_all
    import django
+   patch_all()
    Pin.override(Pin.get_from(django), tracer=my.custom.tracer)
 
 .. __: https://www.djangoproject.com/