Update README.md

Author: RoelantVos

README.md

@@ -7,3 +7,5 @@ VDW can be used to test out various new patterns and ideas, as well as regressio
 The key concepts are related to the idea that, if you can generate all your ETL and you can ‘replay’ your entire Data Warehouse (when you refactor for instance – using Persistent Staging Areas), you can basically virtualise your entire Data Warehouse (I coined the term ‘NoETL’ for this :-)).
 
 Your Data Warehouse model essentially becomes a ‘schema-on-read’ on your raw data.
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+More information at present is here: http://roelantvos.com/blog/articles-and-white-papers/virtualisation-software/.