Update README.md

Author: pdwaggoner

README.md

@@ -1,6 +1,7 @@
 ## `rIP` detects Fraud in online surveys by tracing, scoring, and visualizing IP addresses
 
 [![CRAN_Status_Badge](https://www.r-pkg.org/badges/version/rIP)](http://cran.r-project.org/package=rIP)
+[![Downloads](http://cranlogs.r-pkg.org/badges/grand-total/rIP)](http://cranlogs.r-pkg.org/)
 [![CRAN RStudio mirror downloads](http://cranlogs.r-pkg.org/badges/rIP)](http://www.r-pkg.org/pkg/rIP)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=plastic)](https://github.com/MAHDLab/rIP/pulls)
 <!-- [![GitHub license](https://img.shields.io/github/license/MAHDLab/rIP.svg?style=plastic)](https://github.com/MAHDLab/rIP/blob/master/LICENSE) -->