Add RStudio to list of dependencies

README.md

@@ -6,7 +6,7 @@ Requirements
 ============
 
 - A database in [Common Data Model version 5](https://github.com/OHDSI/CommonDataModel) in one of these platforms: SQL Server, Oracle, PostgreSQL, IBM Netezza, Apache Impala, Amazon RedShift, Google BigQuery, or Microsoft APS.
-- R version 4.0.0 or newer
+- RStudio with R version 4.0.0 or newer
 - On Windows: [RTools](http://cran.r-project.org/bin/windows/Rtools/)
 - [Java](http://java.com)
 - 25 GB of free disk space