commit v2.4.0

* release date 2016.08.13
* with a BIG THANK YOU to [Andy Fragen](https://github.com/afragen) who
made the plugin fully Multisite compatible and therewith we have been
able to finally close [this
issue](#4).
* Andy also cleaned up some misc spacing and refactored part of the
code for it to work smoother. People interested can see the full
[PR](#16).
* tested with WP version 4.6

README.md

@@ -2,7 +2,7 @@
 
 [![plugin version](https://img.shields.io/wordpress/plugin/v/so-clean-up-wp-seo.svg)](https://wordpress.org/plugins/so-clean-up-wp-seo)
 
-###### Last updated on 2016.06.20
+###### Last updated on 2016.08.13
 ###### requires at least WordPress 4.3
 ###### tested up to WordPress 4.6
 ###### Author: [Piet Bos](https://github.com/senlin)