updated urls

Author: dlebauer

README.md

@@ -12,15 +12,15 @@ Many of these tutorials have complex dependencies. In addition, many datasets ar
 
 ### Data Access
 
-The first research-grade version of TERRA REF data products will be released in November 2018. 
-Before that, we will make evaluation releases available: the alpha version was released in November 2016 and the beta version will be released in 2017.
+The first research-grade version of TERRA REF data products will be released in November 2019. 
+Before that, we will make evaluation releases available: the alpha version was released in November 2016 and the beta version will be released in 2018.
 
 To access data please fill out a quick [Beta User application](http://terraref.org/beta).
 
 ### Links
 
 TODO: add links to quick-start documentation, README's, code for learning and applied examples
 
-* Data portal: terraref.org/data
-* Docker Images on Docker Hub: hub.docker.com/terraref
-* NDS Labs Workbench: workbench.terraref.org
+* Data portal: [terraref.org/data](https://terraref.org/data)
+* Docker Images on Docker Hub: [hub.docker.com/terraref](https://hub.docker.com/terraref)
+* NDS Labs Workbench: [www.workbench.terraref.org](https://www.workbench.terraref.org)