Using R to get data, schedule refresh/add data source

Hello - I have a Power BI report and I'm using an R query to Get Data.  

Now I'm trying to schedule a refresh.  My Personal Gateway is all set up and I have data sources successfully added to it for other reports that use a SQL Server Data Source Type.  

Since my source is not excel or a CSV that runs an R Script, and the Source is the R script in itself, how do I add a datasource that corresponds with an R script?  Which Data Source Type do I need to add and what are the steps to get this Data Source added so I can schedule a refresh for the data?

Thank you.