Remove references to dynamic-data.org - fixes #988 (#1023)

Author: RolandPheasant

README.md

@@ -44,9 +44,7 @@ This is a simple example to show how using Dynamic Data's collections and operat
 
 ### Get in touch 
 
-If you have any questions, want to get involved or would simply like to keep abreast of developments, you are welcome to join the slack community [Reactive UI Slack](https://reactiveui.net/slack). I am also available [@RolandPheasant](https://twitter.com/RolandPheasant) 
-There is a blog at  https://dynamic-data.org/ but alas it is hopelessly out of date.
-
+If you have any questions, want to get involved or would simply like to keep abreast of developments, you are welcome to join the slack community [Reactive UI Slack](https://reactiveui.net/slack).
 ## Table of Contents
 
 * [Dynamic Data](#dynamic-data)