Update index.md

Author: jgabry

index.md

@@ -1,10 +1,8 @@
 
 [![Travis-CI Build Status](https://travis-ci.org/stan-dev/shinystan.svg?branch=master)](https://travis-ci.org/stan-dev/shinystan)
 [![Codecov](http://codecov.io/gh/stan-dev/shinystan/branch/master/graph/badge.svg)](https://codecov.io/gh/stan-dev/shinystan)
-
-<!--
 [![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/shinystan?color=blue)](http://cran.r-project.org/web/packages/shinystan)
-[![RStudio CRAN Mirror Downloads](http://cranlogs.r-pkg.org/badges/shinystan?color=blue)](http://cran.rstudio.com/package=shinystan)-->
+[![RStudio CRAN Mirror Downloads](http://cranlogs.r-pkg.org/badges/shinystan?color=blue)](http://cran.rstudio.com/package=shinystan)
 
 <div style="text-align:left">
 <span><a href="http://mc-stan.org">