Update README to target VSO not TFS

Author: Willy-Peter Schaub

README.md

@@ -1,4 +1,4 @@
-## Migrate assets from RM server to TFS ##
+## Migrate assets from RM server to VSO ##
 
 > **PREVIEW NOTICE**
 > This project is still *UNDER CONSTRUCTION*. Tooling and
@@ -8,7 +8,10 @@
 > product!
 
 ### What ###
-As Bob,the Release Manager, I would like to migrate my assets from 2015 or 2013 U4 RM server to 2015 TFS server, and start using the Release hub in Team Web Access.
+As Bob,the Release Manager, I would like to migrate my assets from 2015 or 2013 U4 RM server to VSO, and start using the Release hub in Team Web Access. 
+
+### What about TFS? ###
+This solution currently targets VSO, but will be applicable to migration to the new RM features in TFS in a future version of TFS.
 
 ### Why ###
 As the new release management capabilities are going to part of TFS, and as customers are currently using the WPF client along with RM server, there is a need to help them migrate their assets into the new model. Most of these customers are using agent-based release templates.