docs: Recommend different import style

See #19

Author: untitaker

docs/celery.md

@@ -2,11 +2,11 @@
 
 Just add ``CeleryIntegration()`` to your ``integrations`` array. For example, in Django:
 
+    import sentry_sdk
     from sentry_sdk.integrations.celery import CeleryIntegration
     from sentry_sdk.integrations.django import DjangoIntegration
-    from sentry_sdk import init
 
-    init(dsn="https://foo@sentry.io/123", integrations=[DjangoIntegration(), CeleryIntegration()])
+    sentry_sdk.init(dsn="https://foo@sentry.io/123", integrations=[DjangoIntegration(), CeleryIntegration()])
 
 
 With that, the transaction on the event will be set to the task name, and

docs/django.md

@@ -2,10 +2,10 @@
 
 In your ``settings.py``:
 
+    import sentry_sdk
     from sentry_sdk.integrations.django import DjangoIntegration
-    from sentry_sdk import init
 
-    init(dsn="https://foo@sentry.io/123", integrations=[DjangoIntegration()])
+    sentry_sdk.init(dsn="https://foo@sentry.io/123", integrations=[DjangoIntegration()])
 
 * All exceptions are reported.
 

docs/flask.md

@@ -1,10 +1,9 @@
 # Using Sentry with Flask
 
-
+    import sentry_sdk
     from sentry_sdk.integrations.flask import FlaskIntegration
-    from sentry_sdk import init
 
-    init(dsn="https://foo@sentry.io/123", integrations=[FlaskIntegration()])
+    sentry_sdk.init(dsn="https://foo@sentry.io/123", integrations=[FlaskIntegration()])
 
     app = Flask(__name__)
 

docs/logging.md

@@ -4,14 +4,14 @@ Calling ``sentry_sdk.init()`` already captures any logging message with a level
 higher than or equal to ``INFO``. You can change this behavior by explicitly
 passing the logging integration like any other:
 
+    import sentry_sdk
     from sentry_sdk.integrations.logging import LoggingIntegration
-    from sentry_sdk import init
 
     sentry_logging = LoggingIntegration(
         level=logging.DEBUG,
         event_level=logging.ERROR
     )
-    init(dsn="https://foo@sentry.io/123", integrations=[sentry_logging])
+    sentry_sdk.init(dsn="https://foo@sentry.io/123", integrations=[sentry_logging])
 
 The above configuration captures *all* messages, now including ``DEBUG``, as
 breadcrumbs. Messages with level ``ERROR`` and above will show up as their own