add installation matchingR package
add installation matchingR package

ChicagoBoothAnalytics/DataWrangling_inR,ChicagoBoothAnalytics/HelpRFun,ChicagoBoothAnalytics/DataWrangling_inR,ChicagoBoothAnalytics/HelpRFun,ChicagoBoothAnalytics/HelpRFun,ChicagoBoothAnalytics/DataWrangling_inR