update README

README.md

@@ -1,4 +1,4 @@
-TACO Server 
+DEPRECATED: TACO Server 
 =====================
 [![Phovea][phovea-image]][phovea-url] [![Build Status][circleci-image]][circleci-url]
 
@@ -9,6 +9,9 @@ This is the repository for the server code. **The client code is available in th
 
 A simple way to install taco is using the [taco_product](https://github.com/Caleydo/taco_product).
 
+### DEPRECATION Information
+Please note that this project has been archived and is no longer being maintained. There is an active development under https://github.com/datavisyn/tdp_core and we will also contribute our future changes to it.
+
 Installation
 ------------