Update README.md

Author: jessesquires

README.md

@@ -39,6 +39,12 @@ $ bundle exec jekyll serve
 # Now browse to http://localhost:4000
 ```
 
+#### Writing a draft
+
+```bash
+$ bundle exec jekyll build --future --drafts --watch
+```
+
 ## Contributing
 
 For translations, content suggestions, fixes, or corrections — please see [`CONTRIBUTING.md`](https://github.com/SwiftWeekly/swiftweekly.github.io/blob/master/CONTRIBUTING.md).