add link to ghpages

README.md

@@ -3,5 +3,9 @@
 ## Introduction
 The files in this code repository document the use of the [Darwin Core](http://rs.tdwg.org/dwc/terms/)  and [Access to Biological Collections Data Extended For Geosciences (ABCDEFG)](http://www.geocase.eu/efg) [TDWG](http://www.tdwg.org/) data standards for paleobiology. The documentation provides examples immplementation of these standards under the most common paleobiology use cases. For further introduction into the activities of the TDWG Paleo Interest group please see the [wiki](https://github.com/tdwg/paleo/wiki).
 
-## Index ##
+### GitHub Pages
+
+This repository has a GitHub Pages site, which can be found at [https://tdwg.github.io/esp/](https://tdwg.github.io/esp/). This site is currently in use for sharing georeferencing resources. The GitHub Pages site is built from the main directory of this repository.
+
+## Index
 [Use Case 1. Single collected mammalian fossil specimen.](https://github.com/tdwg/paleo/blob/master/use_case_1.md)