Update README.md to include launching button

README.md

@@ -7,8 +7,12 @@ established R environment with all essential packages installed.
 
 ## How to use the notebook
 
-Users should click on the "**Open in binder**" button to launch the interactive learning
-environment.
+Users should click on the "**Open in binder**" button below to launch the preferred interactive 
+learning environment.
+
+Launching the R sandbox in RStudio: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fk3.cicsnc.org%2Fdrao%2Fncai-training-sandbox-r/master?urlpath=git-pull?repo=https%3A%2F%2Fk3.cicsnc.org%2Fdrao%2Fncai-training-notebook-r)
+
+Launching the R sandbox in Jupyter: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fk3.cicsnc.org%2Fdrao%2Fncai-training-sandbox-r/master?urlpath=git-pull?repo=https%3A%2F%2Fk3.cicsnc.org%2Fdrao%2Fncai-training-notebook-r)
 
 ## License
 The notebooks are developed by [Yuhan (Douglas) Rao](https://ncics.org/people/douglas-rao/)