diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 This is a online interactive version of the planisphere from HKNEAC.
-
+The production copy is [here](http://www.hokoon.edu.hk/planisphere/)
+Live Demo on [Github Page](https://ct-chu.github.io/planisphere/)  
+  
 ## Functionality implemented
 
 1. View the constellations in the night sky of a specific date and time of the year.