Mention that drafts are not deployed by default (#883)

content/en/getting-started/quick-start.md

@@ -180,3 +180,7 @@ hugo
 ```
 
 Output will be in `./public/` directory by default (`-d`/`--destination` flag to change it, or set `publishdir` in the config file).
+
+{{% note %}}
+Drafts do not get deployed; once you finish a post, update the header of the post to say `draft: false`. More info [here](/getting-started/usage/#draft-future-and-expired-content).
+{{% /note %}}