New example of get_object (#1062)

* get_object example
Co-authored-by: Alexander Mohr <thehesiod@users.noreply.github.com>

---------

Co-authored-by: Semyon Grigoriev <s.grigoriev@cdnvideo.com>
Co-authored-by: Alexander Mohr <thehesiod@users.noreply.github.com>

examples/simple.py

@@ -28,6 +28,15 @@ async def go():
         resp = await client.get_object_acl(Bucket=bucket, Key=key)
         print(resp)
 
+        resp = await client.get_object(Bucket=bucket, Key=key)
+        async with resp['Body'] as stream:
+            await stream.read()  # if you do not read the stream the connection cannot be re-used and will be dropped
+            print(resp)
+        """
+        This is to ensure the connection is returned to the pool as soon as possible.
+        Otherwise the connection will be released after it is GC'd
+        """
+
         # delete object from s3
         resp = await client.delete_object(Bucket=bucket, Key=key)
         print(resp)